Works matching IS 0022152X AND DT 1997 AND VI 34 AND IP 2

Results: 61

meta-Benzenotetratetrazolophanes.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 691, doi. 10.1002/jhet.5570340260

By:

Butler, Richard N.;
Fleming, Adrienne F. M.

Publication type:

Article

Conformational and stereoelectronic control in ring-transformations of cis-4,5-dialkoxytetrahydropurine-2,6,8-triones.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 477, doi. 10.1002/jhet.5570340220

By:

Poje, Nevenka;
Palković, Antun;
Poje, Mirko

Publication type:

Article

Synthesis of halosulfuron-methyl via selective chlorination at 3- and/or 5-position of pyrazole-4-carboxylates.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 537, doi. 10.1002/jhet.5570340231

By:

Morimoto, Katsushi;
Sato, Toshiaki;
Yamamoto, Susumu;
Takeuchi, Hiroshi

Publication type:

Article

Positive ions and negative ions fab (fast atom bombardment) mass spectrometry of some bisazolium salts.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 367, doi. 10.1002/jhet.5570340202

By:

Cabildo, Pilar;
Claramunt, Rosa;
Lavandera, José Luis;
Sanz, Dionisia;
Elguero, Jose;
Enjalbal, Christine;
Aubagnac, Jean-Louis

Publication type:

Article

New anti-tumor agents. 3. Phenolic benzopyran lactone and amine derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 601, doi. 10.1002/jhet.5570340242

By:

Jurd, Leonard

Publication type:

Article

Ethyl (4- N-acylaminopyridin-3-yl)glyoxylate and 5-azaisatin as new synthons for a route to various new polyheterocycles.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 441, doi. 10.1002/jhet.5570340213

By:

Rivalle, Christian;
Bisagni, Emile

Publication type:

Article

Molecular structure and electronic spectrum of ellagic acid: Semiempirical molecular orbital calculations.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 665, doi. 10.1002/jhet.5570340253

By:

Sato, Tsuguo;
Kataoka, Masahiro

Publication type:

Article

Retro-ene reactions in heterocyclic synthesis, III. A new route to 4,5-dihydrooxazoles and 5,6-dihydro-4 H-1,3-oxazines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 501, doi. 10.1002/jhet.5570340224

By:

Ito, Kunio;
Miyajima, Shingo

Publication type:

Article

A novel synthesis of 3-halo-2-phenylquinoline-4-carboxylic acids.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 557, doi. 10.1002/jhet.5570340235

By:

Raveglia, Luca F.;
Giardina, Giuseppe A. M.;
Grugni, Mario;
Rigolio, Roberto;
Farina, Carlo

Publication type:

Article

Bicyclic [ b]-heteroannulated pyridazine derivatives. 4.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 389, doi. 10.1002/jhet.5570340206

By:

Lange, Jerzy;
Pytlewska, Elzbieta;
Plenkiewicz, Jan;
Kulinski, Tomasz;
Karolak-Wojciechowska, Janina;
Rump, Slawomir

Publication type:

Article

A new efficient route to imidazo[4,5- c]pyrazol-5-ones.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 629, doi. 10.1002/jhet.5570340246

By:

Vicentini, Chiara B.;
Veronese, Augusto C.;
Manfrini, Maurizio

Publication type:

Article

Hydrogen-deuterium exchange in dimethylpyridines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 685, doi. 10.1002/jhet.5570340257

By:

Kebede, Naod;
Pavlik, James W.

Publication type:

Article

The nucleophilic ring-opening of N-benzylquinuclidinium bromide.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 461, doi. 10.1002/jhet.5570340217

By:

Axelsson, Oskar;
Peters, Dan

Publication type:

Article

A new route to the improved synthesis of 1-(alkoxymethyl)-5-alkyl-6-(arylselenenyl)uracils.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 659, doi. 10.1002/jhet.5570340252

By:

Lee, Namkyu;
Kim, Young-Woo;
Kim, Key H.;
Kim, Dae-Kee

Publication type:

Article

Friedel-crafts reactions of 2-amino-4-(alkyl or aryl)oxazoles with acid chlorides and acid anhydrides: Synthesis of 5-acyl-2-amino-4-alkyloxazoles.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 567, doi. 10.1002/jhet.5570340237

By:

Mekonnen, Belew;
Crank, George

Publication type:

Article

Synthesis of pyrido[2,3- d]pyrimidinones by the reaction of aminopyrimidin-4-ones with benzylidene meldrum's acid derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 521, doi. 10.1002/jhet.5570340228

By:

Quiroga, Jairo;
Hormaza, Angelina;
Insuasty, Braulio;
Nogueras, Manuel;
Sánchez, Adolfo;
Hanold, Norbert;
Meier, Herbert

Publication type:

Article

A new and facile synthesis of imidazo[2,1- b]oxazoles.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 589, doi. 10.1002/jhet.5570340241

By:

Mekonnen, Belew;
Crank, George;
Craig, Donald

Publication type:

Article

Ring-transformation reactions of 5-hydroxy-2-oxabicyclo[3.2.0]-heptan-4-ones and 5-hydroxy-2-oxabicyclo[3.2.0]hept-6-en-4-ones.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 533, doi. 10.1002/jhet.5570340230

By:

Shimo, Tetsuro;
Minamishin, Hidemi;
Somekawa, Kenichi

Publication type:

Article

6-Substituted thioquinanthrenes. Reaction of thioquinanthrene with radicals formed from DMF.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 401, doi. 10.1002/jhet.5570340208

By:

Maślankiewicz, Andrzej;
Michalik, Ewa

Publication type:

Article

Synthesis of dithia- and tetrathiacyclophanes incorporating isoxazole units.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 579, doi. 10.1002/jhet.5570340239

By:

Hatta, Taizo;
Kawano, Muneob;
Maeda, Hironori;
Tsuge, Otohiko

Publication type:

Article

Application of the mitsunobu reaction in the field of alkaloids.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 349, doi. 10.1002/jhet.5570340201

By:

Simon, Csaba;
Hosztafi, Sándor;
Makleit, Sandor

Publication type:

Article

Long-range 1H-15N two-dimensional heteronuclear shift correlation of the alkaloid vincamine at natural abundance.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 695, doi. 10.1002/jhet.5570340261

By:

Martin, Gary E.

Publication type:

Article

2-Mono- and 2,5-bis[bis[(4-dimethylamino)phenyl]hydroxymethyl]-substituted furans, thiophenes and N-methylpyrroles: New color-formers for carbonless imaging.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 561, doi. 10.1002/jhet.5570340236

By:

Katritzky, Alan R.;
Zhang, Zhongxing;
Lang, Hengyuan;
Jubran, Nusrallah;
Leichter, Louis M.;
Sweeny, Norman

Publication type:

Article

Mass spectrometry of 3-oxothiazolo[3,2- a] and [3,2- c]pyrimidin-5-ones. Correlation of the intensities of the M+. and the selected fragment ions.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 435, doi. 10.1002/jhet.5570340212

By:

Wybieralska, Jadwiga

Publication type:

Article

Furopyridines. XXI.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 493, doi. 10.1002/jhet.5570340223

By:

Shiotani, Shunsaku;
Taniguchi, Katsunori

Publication type:

Article

Synthesis and metalation of trifluoromethylpyrimidines. Metalation of diazines. XVI.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 551, doi. 10.1002/jhet.5570340234

By:

Plé, N.;
Turck, A.;
Heynderickx, A.;
Quéguiner, G.

Publication type:

Article

Synthesis of 2-aminoquinazolines from ortho-fluorobenzaldehydes.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 385, doi. 10.1002/jhet.5570340205

By:

Hynes, John B.;
Campbell, Johnny P.

Publication type:

Article

Use of sulfur derivatives as an ortho directing group for the metalation of diazines. Metalation of diazines. XVIII.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 621, doi. 10.1002/jhet.5570340245

By:

Turck, Alain;
Plé, Nelly;
Pollet, Paméla;
Mojovic, Ljubica;
Duflos, Jack;
Quéguiner, Guy

Publication type:

Article

Unexpected formation of benzaldehydes by the reactions of dithioacetals derived from cinnamaldehydes with 2,3-dichloro-5,6-dicyano- p-benzoquinone in aqueous solvents.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 457, doi. 10.1002/jhet.5570340216

By:

Tanemura, Kiyoshi;
Nishida, Yoko;
Suzuki, Tsuneo;
Satsumabayashi, Koko;
Horaguchi, Takaaki

Publication type:

Article

A convenient synthesis of 1,3-oxazolidin-4-ones and 1,3-oxazin-4-ones.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 681, doi. 10.1002/jhet.5570340256

By:

Wanner, Klaus Th.;
Weber, Ulrich

Publication type:

Article

Facile and convenient synthesis of 2,6-disubstituted 4 H-1,3-oxazin-4-one derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 515, doi. 10.1002/jhet.5570340227

By:

Morita, Yasuo;
Kaneko, Masakazu;
Matsuzawa, Sumiko;
Yamamoto, Yutaka

Publication type:

Article

Reactions of 1,2,4-triazin-5(2 H)-ones with phenols and aromatic amines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 573, doi. 10.1002/jhet.5570340238

By:

Chupakhin, Oleg N.;
Rusinov, Vladimir L.;
Beresnev, Dmitri G.;
Neunhoeffer, H.

Publication type:

Article

A new synthetic route to 2-substituted naphtho[2,3- b]furan-4,9-dione2-Substituted Naphtho[2,3- b]furan-4,9-dione.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 407, doi. 10.1002/jhet.5570340209

By:

Koyanagi, Jyunichi;
Yamamoto, Katsumi;
Nakayama, Kouji;
Tanaka, Akira

Publication type:

Article

Diastereoselective michael addition of nitrogen and sulfur-nucleophiles to α,β-unsaturated δ-thiolactams.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 643, doi. 10.1002/jhet.5570340249

By:

Sośnicki, Jacek G.;
Jagodziński, Tadeusz S.;
Liebscher, Jürgen

Publication type:

Article

Synthesis of Dialkyl 1,4-Dihydro-2,6-dimethyl-4-(heteroaryl)-pyridine-3,5-dicarboxylates as Calcium Channel Antagonists.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 585, doi. 10.1002/jhet.5570340240

By:

Anana, Raymond D.;
Knaus, Edward E.

Publication type:

Article

Reaction of 5-substituted-2-amino-2-oxazolines with ethoxycarbonyl isocyanate. A route to 2,3,6,7-tetrahydro-4 H-oxazolo[3,2- a]-1,3,5-triazine-2,4-diones.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 429, doi. 10.1002/jhet.5570340211

By:

Adetchessi, Ouro;
Desor, Daniel;
Forfar, Isabelle;
Jarry, Christian;
Leger, Jean Michel;
Laguerre, Michel;
Carpy, Alain

Publication type:

Article

Syntheses and spectral properties of 2,3,7,8-tetracyano-5,10-dihydrodipyrazino[2,3- b:2′,3′- e]pyrazine.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 653, doi. 10.1002/jhet.5570340251

By:

Jaung, Jae-Yun;
Fukunishi, Koushi;
Matsuoka, Masaru

Publication type:

Article

The reaction of 3,5-dichloro-2,4,6-trimethylbenzonitrile oxide with chiral fluoro-substituted allyl sulfoxides.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 489, doi. 10.1002/jhet.5570340222

By:

Bravo, Pierfrancesco;
Bruché, Luca;
Seresini, Paolo;
Zanda, Matteo;
Arnone, Alberto

Publication type:

Article

Syntheses of substituted pyrrolo[2,3- d]imidazoles.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 549, doi. 10.1002/jhet.5570340233

By:

Shafiee, A.;
Hadizadeh, F.

Publication type:

Article

Reaction of 5-amino-1-phenylpyrazole-4-carbonitriles with dimethyl acetylenedicarboxylate. Synthesis and structural determination of trimethyl 4,8-dioxo-1-phenyl-4,5,5a,8-tetrahydro-1 H-pyrazolo[3,4- e]indolizine-5,5a,6-tricarboxylate derivatives.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 613, doi. 10.1002/jhet.5570340244

By:

Tominaga, Yoshinori;
Yoshioka, Noriko;
Castle, Raymond N.;
Luo, Jiann-Kuan;
Hata, Tadashi

Publication type:

Article

Mass spectrometric behaviour of 1-imino-substituted pyrazolo[1,2- a]-[1,2,4]triazoles under electron and chemical ionization.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 381, doi. 10.1002/jhet.5570340204

By:

Joutsiniemi, Karoliina;
Vainiotalo, Pirjo;
Morgenstern, Olaf;
Klemann, Anke

Publication type:

Article

Semi-synthesis of paclitaxel from naturally occurring glycosidic precursors.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 675, doi. 10.1002/jhet.5570340255

By:

Rao, Koppaka V.

Publication type:

Article

Organic syntheses based on 2-oxoglutaric acid. V. Syntheses of novel 2 H-1,4-benzothiazines and a 2,5-dihydro-1,5-benzothiazepine.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 453, doi. 10.1002/jhet.5570340215

By:

Blitzke, Torsten;
Sicker, Dieter;
Wilde, Horst

Publication type:

Article

Haloacetylated enol ethers. 8 [12]. Reaction of β-alkoxyvinyl trihalomethyl ketones with guanidine hydrochloride. Synthesis of 4-trihalomethyl-2-aminopyrimidines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 509, doi. 10.1002/jhet.5570340226

By:

Zanatta, Nilo;
Cortelini, Maria de F. M.;
Carpes, Marcos J. S.;
Bonacorso, Helio G.;
Martins, Marcos A. P.

Publication type:

Article

On triazoles XXXVII.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 637, doi. 10.1002/jhet.5570340248

By:

Reiter, József;
Kajtár-Peredy, Mária;
Bauer, Ludwig

Publication type:

Article

Synthesis of 1,2,4-triazole and thiazole analogs of ketoconazole.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 469, doi. 10.1002/jhet.5570340219

By:

Huang, Liang-Fu;
Kim, Jang-Woo;
Bauer, Ludwig;
Doss, George

Publication type:

Article

Multiple 1,2,3-thiadiazoles.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 605, doi. 10.1002/jhet.5570340243

By:

Al-Smadi, Mousa;
Hanold, Norbert;
Meier, Herbert

Publication type:

Article

A facile synthesis of the lowest homologues of meso-tetraalkylporphyrin.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 689, doi. 10.1002/jhet.5570340259

By:

Neya, Saburo;
Funasaki, Noriaki

Publication type:

Article

Syntheses of polysubstituted pyrroles and of 2,3-disubstituted quinoxalines and substituted benzo[ g]quinoxalines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 541, doi. 10.1002/jhet.5570340232

By:

Adembri, Giorgio;
Celli, Angela Maria;
Sega, Alessandro

Publication type:

Article

Tetracyclic systems: Synthesis of isoindolo[1,2- b]thieno-[2,3(3,2 or 3,4)- e][1,3]thiazocines and Isoindolo[2,1- a]thieno-[2,3(3,2 or 3,4)- f][1,4] and [1,5]diazocines.

Published in:

Journal of Heterocyclic Chemistry, 1997, v. 34, n. 2, p. 375, doi. 10.1002/jhet.5570340203

By:

Pigeon, Pascal;
Decroix, Bernard

Publication type:

Article