Works about PYRAN

Results: 339

Cobalt‐Assisted α‐Activation of Ketones, Their Arylation and Keto‐Enol Equilibrium Confined into a Macrocycle.

Published in:

Chemistry - A European Journal, 2025, v. 31, n. 27, p. 1, doi. 10.1002/chem.202500906

By:

Szymanowski, Kacper;
Bara, Wiktoria;
Białek, Michał J.

Publication type:

Article

Chemical constituents of the Vietnamese inedible mushroom Xylaria intracolorata.

Published in:

Natural Product Research, 2006, v. 20, n. 4, p. 317, doi. 10.1080/14786410600650354

By:

Quang, Dang Ngoc;
Bach, Dang Dinh;
Hashimoto, Toshihiro;
Asakawa, Yoshinori

Publication type:

Article

Substituent‐Controlled Energetics and Barriers of Mechanochromic Spiropyran‐Functionalized Poly(ɛ‐caprolactone).

Published in:

Macromolecular Chemistry & Physics, 2023, v. 224, n. 1, p. 1, doi. 10.1002/macp.202200254

By:

Kempe, Fabian;
Metzler, Lukas;
Brügner, Oliver;
Buchheit, Hannah;
Walter, Michael;
Komber, Hartmut;
Sommer, Michael

Publication type:

Article

Influence of various factors on formation of 2,3-dihydro-3,5-dihydroxy-6-methyl-4( H)-pyran-4-one (DDMP) in a solid-state model system of Maillard reaction.

Published in:

European Food Research & Technology, 2014, v. 239, n. 1, p. 31, doi. 10.1007/s00217-014-2191-2

By:

Zhou, Zhilei;
Xu, Zhiqiang;
Shu, Junsheng;
She, Shike;
Sun, Weifeng;
Yin, Chunyan;
Chen, Maoshen;
Li, Yue;
Zhong, Fang

Publication type:

Article

Dynamic stereoselective annulation via aldol-oxa-cyclization cascade reaction to afford spirooxindole pyran polycycles.

Published in:

Communications Chemistry, 2019, v. 2, n. 1, p. N.PAG, doi. 10.1038/s42004-019-0177-5

By:

Sohail, Muhammad;
Tanaka, Fujie

Publication type:

Article

Harpagoside-induced anaphylactic reaction in an IgE-independent manner both <italic>in vitro</italic> and <italic>in vivo</italic>.

Published in:

Immunopharmacology & Immunotoxicology, 2018, v. 40, n. 2, p. 173, doi. 10.1080/08923973.2018.1424900

By:

Che, Delu;
Cao, Jiao;
Liu, Rui;
Wang, Jue;
Hou, Yajing;
Zhang, Tao;
Wang, Nan

Publication type:

Article

Eco-Friendly One-Pot Synthesis of Tetrahydrobenzo[b]Pyran and Dihydropyrano[3,2-c]Chromene Derivatives Using Functionalized Fe3O4@SiO2@SO3H Under MWI.

Published in:

Polycyclic Aromatic Compounds, 2025, v. 45, n. 1, p. 60, doi. 10.1080/10406638.2024.2389939

By:

Shekhanavar, Raju;
Khatavi, Santosh;
Kamanna, Kantharaju

Publication type:

Article

Acidic Ionic Liquids in Ultrasonic Irradiation Conditions Promote the Nucleophilic Addition to Chalcone Derivatives.

Published in:

Polycyclic Aromatic Compounds, 2024, v. 44, n. 8, p. 5099, doi. 10.1080/10406638.2023.2259572

By:

Tavakoli, Fatemeh Hosna;
Asadollahi Chaharsoughi, Mina;
Ghashang, Majid

Publication type:

Article

Comprehensive Review on One-pot Green Synthesis of Pyran and Chromene Fused Benzo[α]phenazines.

Published in:

Polycyclic Aromatic Compounds, 2024, v. 44, n. 3, p. 1697, doi. 10.1080/10406638.2023.2203506

By:

Thakral, Ankita;
Verma, Monika;
Thakur, Ajay;
Bharti, Ruchi;
Sharma, Renu

Publication type:

Article

Novel Pumice Supported Perchloric Acid Promoted Protocol for the Synthesis of Tetrahydrobenzo[b]pyran via Multi-component Approach.

Published in:

Polycyclic Aromatic Compounds, 2024, v. 44, n. 1, p. 591, doi. 10.1080/10406638.2023.2179080

By:

Tambe, Adinath;
Dange, Chaitali;
Gavande, Jayshri;
Dhawale, Ravindra;
Kadnor, Vijay;
Gadhave, Anil;
Shirole, Gopinath

Publication type:

Article

Catalyst-Free and Solvent-Free Visible Light Assisted Synthesis of Tetrahydrobenzo[b]Pyran Scaffolds at Room Temperature.

Published in:

Polycyclic Aromatic Compounds, 2022, v. 42, n. 10, p. 7607, doi. 10.1080/10406638.2021.2006244

By:

Mohamadpour, Farzaneh

Publication type:

Article

Review on Synthesis and Medicinal Application of Dihydropyrano[3,2-b]Pyrans and Spiro-Pyrano[3,2-b]Pyrans by Employing the Reactivity of 5-Hydroxy-2-(Hydroxymethyl)-4H-Pyran-4-One.

Published in:

Polycyclic Aromatic Compounds, 2022, v. 42, n. 9, p. 5893, doi. 10.1080/10406638.2021.1962923

By:

Borah, Biplob;
Dwivedi, Kartikey Dhar;
Chowhan, L. Raju

Publication type:

Article

An Efficient and Rapid Synthesis of 1,4-Dihydropyrano[2,3-c]Pyran and 1,4-Dihydropyrano[2,3-c]Quinoline Derivatives Using Copper Nanoparticles Grafted on Carbon Microspheres.

Published in:

Polycyclic Aromatic Compounds, 2022, v. 42, n. 7, p. 4635, doi. 10.1080/10406638.2021.1950194

By:

Kaminwar, Nitishkumar S.;
Tekale, Sunil U.;
Pokalwar, Rajkumar U.;
Kótai, László;
Pawar, Rajendra P.

Publication type:

Article

Uric Acid as a Naturally Biodegradable and Reusable Catalyst for the Convenient and Eco-Safe Synthesis of Biologically Active Pyran Annulated Heterocyclic Systems.

Published in:

Polycyclic Aromatic Compounds, 2022, v. 42, n. 4, p. 1358, doi. 10.1080/10406638.2020.1781205

By:

Lashkari, Mojtaba;
Mohamadpour, Farzaneh;
Maghsoodlou, Malek Taher;
Heydari, Reza;
Hazeri, Nourallah

Publication type:

Article

Zn2SnO4-SnO2 Nano-Composite Promoted Ultrasonic-Assisted Synthesis of Pyran Derivatives.

Published in:

Polycyclic Aromatic Compounds, 2022, v. 42, n. 2, p. 460, doi. 10.1080/10406638.2020.1743328

By:

Ziyaadini, Morteza;
Nemat-Bakhsh, Nabi;
Roudbaraki, Seyyed Jalal;
Ghashang, Majid

Publication type:

Article

Synthesis of Novel 2-Amino-7-Methyl-4-Aryl-3-(Phenylsulfonyl)Pyrano[4,3-b]Pyran-5(4H)-One Derivatives in the Presence TiCl4 Supported on Kaolin as a Nano Catalyst.

Published in:

Polycyclic Aromatic Compounds, 2021, v. 41, n. 5, p. 920, doi. 10.1080/10406638.2019.1628784

By:

Abyar, Elahe;
Sadeghi, Bahareh;
Mosslemin, Mohammad Hossein

Publication type:

Article

Synthesis of Pyran-Annulated Heterocyclic Systems Catalyzed by Theophylline as a Green and Bio-Based Catalyst.

Published in:

Polycyclic Aromatic Compounds, 2021, v. 41, n. 1, p. 160, doi. 10.1080/10406638.2019.1575246

By:

Mohamadpour, Farzaneh

Publication type:

Article

Efficient One-Pot Synthesis of Tetrahydrobenzo[ b ]pyrans by Ethylenediamine Diacetate-Catalyzed Multicomponent Reaction Under Solvent-Free Conditions.

Published in:

Polycyclic Aromatic Compounds, 2017, v. 37, n. 1, p. 39, doi. 10.1080/10406638.2015.1088042

By:

Zhou, Zhongqiang;
Zhang, Yuliang;
Hu, Xiaoyun

Publication type:

Article

Efficient Synthesis of Dihydropyrans via Copper‐Catalyzed Dehydrogenative Oxidation and Hetero‐Diels‐Alder Reactions.

Published in:

Asian Journal of Organic Chemistry, 2024, v. 13, n. 8, p. 1, doi. 10.1002/ajoc.202400118

By:

Li, Haofan;
Chen, Zhiliang;
Du, Yu;
Su, Weiping

Publication type:

Article

Divergent Total Synthesis of (±)‐Mahanine and Other Carbazole Alkaloids.

Published in:

Asian Journal of Organic Chemistry, 2021, v. 10, n. 5, p. 1207, doi. 10.1002/ajoc.202100176

By:

Polley, Arghya;
Varalaxmi, Kasarla;
Nandi, Arijit;
Jana, Ranjan

Publication type:

Article

Organocatalytic Asymmetric Synthesis of Highly Substituted Tetrahydrofurans and Tetrahydropyrans via Double Michael Addition Strategy.

Published in:

Asian Journal of Organic Chemistry, 2018, v. 7, n. 9, p. 1788, doi. 10.1002/ajoc.201800316

By:

Mondal, Buddahdeb;
Balha, Megha;
Pan, Subhas Chandra

Publication type:

Article

Asymmetric Organocatalytic Assembly of Oxindoles Fused with Spiro-3,4-dihydropyrans with Three Contiguous Stereocenters Consisting of Vicinal Quaternary Centers.

Published in:

Asian Journal of Organic Chemistry, 2016, v. 5, n. 5, p. 613, doi. 10.1002/ajoc.201600051

By:

Vishwanath, Manjunatha;
Vinayagam, Poopathy;
Gajulapalli, V Pratap Reddy;
Kesavan, VENkitasamy

Publication type:

Article

A new role for concentrated solar radiation (CSR) as a renewable heat source for the catalyst-solvent free synthesis of tetrahydrobenzo[b]pyran scaffolds.

Published in:

Scientific Reports, 2023, v. 13, n. 1, p. 1, doi. 10.1038/s41598-023-38662-0

By:

Mohamadpour, Farzaneh

Publication type:

Article

9-mesityl-10-methylacridinium perchlorate (Mes-Acr-Me+ClO4−) as a novel metal-free donor–acceptor (D–A) photocatalyst: visible-light-induced access to tetrahydrobenzo[b]pyran scaffolds through a single-electron transfer (SET) pathway

Published in:

Research on Chemical Intermediates, 2024, v. 50, n. 7, p. 2993, doi. 10.1007/s11164-024-05304-7

By:

Mohamadpour, Farzaneh;
Kamyab, Hesam;
Chelliapan, Shreeshivadasan;
Amani, Ali Mohammad

Publication type:

Article

Synthesis of benzo[b]pyran and pyrano[2,3-d]pyrimidine derivatives using a new superparamagnetic nanocatalyst Fe3O4@gly@Furfural@Co(NO3)2.

Published in:

Research on Chemical Intermediates, 2023, v. 49, n. 8, p. 3461, doi. 10.1007/s11164-023-05044-0

By:

Keshani, Raheleh;
Hazeri, Nourallah;
Faroughi Niya, Homayoun;
Fatahpour, Maryam

Publication type:

Article

Preparation and application of ZnFe2O4@SiO2–SO3H, as a novel heterogeneous acidic magnetic nanocatalyst for the synthesis of tetrahydrobenzo[b]pyran and 2,3-dihydroquinazolin-4(1H)-one derivative.

Published in:

Research on Chemical Intermediates, 2023, v. 49, n. 2, p. 441, doi. 10.1007/s11164-022-04890-8

By:

Aghavandi, Hamid;
Ghorbani-Choghamarani, Arash

Publication type:

Article

Coconut endocarp shell ash (CESA): a versatile and waste-originated catalyst for the synthesis of tetrahydrobenzo[b]pyrans and 1, 4-dihydropyridines.

Published in:

Research on Chemical Intermediates, 2022, v. 48, n. 8, p. 3589, doi. 10.1007/s11164-022-04770-1

By:

Patil, Sandip P.;
Shinde, Sachinkumar K.;
Patil, Megha U.;
Patil, Suresh S.

Publication type:

Article

The copolymer coating effect on the catalytic activity of magnetic carbon nanotube (CNT-Fe3O4) in the multi-component reactions.

Published in:

Research on Chemical Intermediates, 2022, v. 48, n. 4, p. 1347, doi. 10.1007/s11164-022-04663-3

By:

Hojati, Seyedeh Fatemeh;
Amiri, Amirhassan;
Fardi, Elham;
Mahamed, Maryam

Publication type:

Article

An approach to the synthesis and characterization of HMS/Pr-Rh-Zr as efficient catalyst for synthesis of tetrahydrobenzo[b]pyran and 1,4-dihydropyrano[2,3-c]pyrazole derivatives.

Published in:

Research on Chemical Intermediates, 2021, v. 47, n. 5, p. 1883, doi. 10.1007/s11164-021-04411-z

By:

Abdolahi, Sahar;
Hajjami, Maryam;
Gholamian, Fatemeh

Publication type:

Article

Novel task-specific ionic liquid [Et2NH(CH2)2CO2H][AcO] as a robust catalyst for the efficient synthesis of some pyran-annulated scaffolds under solvent-free conditions.

Published in:

Research on Chemical Intermediates, 2019, v. 45, n. 3, p. 1595, doi. 10.1007/s11164-018-3696-2

By:

Shaikh, Mohd Akmal;
Farooqui, Mazahar;
Abed, Syed

Publication type:

Article

Synthesis and characterization of guanine-functionalized mesoporous silica [SBA-16-G]: a metal-free and recyclable heterogeneous solid base catalyst for synthesis of pyran-annulated heterocyclic compounds.

Published in:

Research on Chemical Intermediates, 2019, v. 45, n. 3, p. 1619, doi. 10.1007/s11164-018-3693-5

By:

Gupta, Radha;
Layek, Samaresh;
Pathak, Devendra Deo

Publication type:

Article

New application of decaniobate salt as basic solid in the synthesis of 4H-pyrans by microwave assisted multicomponent reactions.

Published in:

Research on Chemical Intermediates, 2018, v. 44, n. 9, p. 5559, doi. 10.1007/s11164-018-3440-y

By:

Gutierrez, Luisa F.;
Nope, Eliana;
Rojas, Hugo A.;
Cubillos, Jairo A.;
Sathicq, Ángel G.;
Romanelli, Gustavo P.;
Martínez, José J.

Publication type:

Article

Efficient and facile ‘on-solvent’ multicomponent synthesis of medicinally privileged pyrano[3,2-<italic>c</italic>]pyridine scaffold.

Published in:

Research on Chemical Intermediates, 2018, v. 44, n. 5, p. 3199, doi. 10.1007/s11164-018-3301-8

By:

Elinson, Michail N.;
Ryzhkov, Fedor V.;
Vereshchagin, Anatoly N.;
Goloveshkin, Alexander S.;
Bushmarinov, Ivan S.;
Egorov, Mikhail P.

Publication type:

Article

Organocatalyzed domino reactions: diversity oriented synthesis of pyran-annulated scaffolds using in situ-developed benzylidenemalononitriles.

Published in:

Research on Chemical Intermediates, 2017, v. 43, n. 4, p. 2445, doi. 10.1007/s11164-016-2772-8

By:

Ahad, Abdul;
Farooqui, Maqdoom

Publication type:

Article

Sulfonic acid-functionalized LUS-1: an efficient catalyst for tetrahydropyranylation/depyranylation of alcohols.

Published in:

Research on Chemical Intermediates, 2016, v. 42, n. 7, p. 6327, doi. 10.1007/s11164-016-2465-3

By:

Rahimifard, Mahshid;
Mohammadi Ziarani, Ghodsi;
Badiei, Alireza

Publication type:

Article

Crown ether complex cation ionic liquids (CECILs) as environmentally benign catalysts for three-component synthesis of 4,5-dihydropyrano[3,2- c]chromene and 4,5-dihydropyrano[4,3- b]pyran derivatives.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 10, p. 7715, doi. 10.1007/s11164-014-1855-7

By:

Abaszadeh, Mehdi;
Seifi, Mohammad

Publication type:

Article

Efficient tandem synthesis of a variety of pyran-annulated heterocycles, 3,4-disubstituted isoxazol-5(4 H)-ones, and α,β-unsaturated nitriles catalyzed by potassium hydrogen phthalate in water.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 10, p. 7847, doi. 10.1007/s11164-014-1863-7

By:

Kiyani, Hamzeh;
Ghorbani, Fatemeh

Publication type:

Article

Synthesis of pyran annulated heterocyclic scaffolds: a highly convenient protocol using dimethylamine.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 10, p. 8009, doi. 10.1007/s11164-014-1873-5

By:

Ramesh, Rathinam;
Lalitha, Appaswami

Publication type:

Article

Three-component domino [3+2] heterocyclization leading to pyran-3-yl-substituted fused pyrroles.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 5, p. 2879, doi. 10.1007/s11164-013-1396-5

By:

Wang, Shuang-Shuang;
Zhu, Qi-Wei;
Liu, Shuai;
Yang, Yang;
Wang, Zhi-Tong;
Jiang, Bo;
Tu, Shu-Jiang

Publication type:

Article

Photochemical characterization of bi-functional compounds containing indolinospiropyran and chalcone groups.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 5, p. 3017, doi. 10.1007/s11164-013-1410-y

By:

Ming, Liang;
Si, Zheng;
Zhang, Qing;
Sheng, Qiao;
Xue, Min;
Liu, Yan

Publication type:

Article

Efficient atom-economical solvent-free one-pot multicomponent synthesis of 2-amino-4 H-benzo[ b]pyrans catalyzed by solid base SiO2-OK as a reusable catalyst.

Published in:

Research on Chemical Intermediates, 2015, v. 41, n. 4, p. 1951, doi. 10.1007/s11164-013-1322-x

By:

Chandralekha, Elangovann;
Thangamani, Arumugam;
Valliappan, Ramiah

Publication type:

Article

Reusable silica-bonded S-sulfonic acid catalyst for three-component synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4 H-chromenes and 2-amino-4 H-pyrans in aqueous ethanol.

Published in:

Research on Chemical Intermediates, 2014, v. 40, n. 8, p. 2583, doi. 10.1007/s11164-013-1111-6

By:

Aswin, K.;
Sheik Mansoor, S.;
Logaiya, K.;
Sudhan, S.;
Saleem Malik, V.;
Ramadoss, H.

Publication type:

Article

TiO and TiO nanoparticles as efficient and recoverable catalysts for the synthesis of pyran annulated heterocyclic systems.

Published in:

Research on Chemical Intermediates, 2013, v. 39, n. 6, p. 2401, doi. 10.1007/s11164-012-0766-8

By:

Babakhani, Nasser;
Keshipoor, Sajjad

Publication type:

Article

LASER INDUCED PHOTOCHROMIC MECHANISM OF 3-PHENYL-3-[1,2-DIMETHYLINDOL-3-YL]-3H-NAPHTHO[2,1-B]PYRAN.

Published in:

Research on Chemical Intermediates, 2000, v. 26, n. 7/8, p. 829, doi. 10.1163/156856700X00732

By:

Pan, Gui-Lan;
Wei, Jing-Qiang;
Fan, Ping;
Zhu, Ai-Ping;
Ming, Yang-Fu;
Fan, M.-G.;
Yao, S.D.

Publication type:

Article

Novel MgO-SnO Solid Superbase as a High-Efficiency Catalyst for One-Pot Solvent-Free Synthesis of Polyfunctionalized 4 H-pyran Derivatives.

Published in:

Catalysis Letters, 2012, v. 142, n. 5, p. 608, doi. 10.1007/s10562-012-0805-5

By:

Zhang, Shu-Guo;
Yin, Shuang-Feng;
Wei, Yu-Dan;
Luo, Sheng-Lian;
Au, Chak-Tong

Publication type:

Article

Pogocablanols A–G, a new class of sesquiterpenoids with an unprecedented bicyclic sesquiterpenoid skeleton from Pogostemon cablin (patchouli) and their activities.

Published in:

Arabian Journal of Chemistry, 2023, v. 16, n. 11, p. N.PAG, doi. 10.1016/j.arabjc.2023.105245

By:

Zhou, Qin-Mei;
Zhu, Huan;
Ma, Chuan;
Guo, Li;
Peng, Cheng;
Xiong, Liang

Publication type:

Article

Pyran‐Bridged Indacenodithiophene as a Building Block for Constructing Efficient A–D–A‐Type Nonfullerene Acceptors for Polymer Solar Cells.

Published in:

ChemSusChem, 2018, v. 11, n. 2, p. 333, doi. 10.1002/cssc.201800048

By:

Wen, Shuguang;
Wu, Yao;
Wang, Yingying;
Li, Yi;
Liu, Ling;
Jiang, Huanxiang;
Liu, Zhitian;
Yang, Renqiang

Publication type:

Article

Theoretical study on the Diels–Alder reaction of bromo-substituted 2H-pyran-2-ones and some substituent vinyls.

Published in:

Journal of the Serbian Chemical Society, 2015, v. 80, n. 9, p. 1139, doi. 10.2298/JSC141205014H

By:

HAGHDADI, MINA;
AMANI, HAMED;
NAB, NASIM

Publication type:

Article

Synthesis, spectral, thermal and biological studies of transition metal complexes of 4-hydroxy-3-[3-(4-hydroxyphenyl)acryloyl]-6-methyl-2H-pyran-2-one.

Published in:

Journal of the Serbian Chemical Society, 2011, v. 76, n. 9, p. 1237, doi. 10.2298/JSC100531108P

By:

PATANGE, VAIBHAV N.;
ARBAD, BALASAHEB R.

Publication type:

Article

An Efficient Synthesis of 3-(3-benzyl-2-(phenylimino)-2,3-dihydrothiazol-4-yl)-6-methyl-4-(2-oxo-2-phenylethoxy)-3,4-dihydro-2 H-pyran-2-one Derivatives via Multi-Component Approach.

Published in:

Journal of Heterocyclic Chemistry, 2015, v. 52, n. 6, p. 1883, doi. 10.1002/jhet.2304

By:

Bade, Thirupaiah;
Vedula, Rajeswar Rao

Publication type:

Article