Keywords: aldol; C-C bond formation; condensation; hydrogenation; reductive alkylation EN aldol C-C bond formation condensation hydrogenation reductive alkylation 1 1 1 11/09/21 20211105 NES 211105 The aldol-type reaction became one of the forefathers of C-C bond formation reactions. Aldol, C-C bond formation, condensation, hydrogenation, reductive alkylation This Review focuses on reductive aldol-type alkylation methods implemented to the synthesis of ten approved drug substances.