Photoinducedelectrontransfer (PET) promoted decarboxylation of α-(ω-carboxyalkyl) β-keto esters undergoes radical ringexpansion and cyclization reactions. This mild and environmentally friendly method can provide one-carbon expanded γ-keto esters and bicyclic alcohols, and the product distribution is strongly dependent on the length of the alkyl chain containing the terminal carboxylate group.
Electrolytic decarboxylation reactions. 4. Electrosyntheses of 3-alkyl-2-cycloalken-1-ol acetates from 1-alkyl-2-cycloalkene-1-carboxylic acids. Preparation of dl-muscone from cyclopentadecanone
Ple-catalyzed resolution of α-substituted β-ketoesters application to the synthesis of (+)-nitraniine and (−)-Isonitramine
作者:Bernhard Westermann、Hildegard Große Scharmann、Ina Kortmann
DOI:10.1016/s0957-4166(00)80054-3
日期:1993.10
Substituted beta-Ketoesters can be prepared in enantiomerically pure form by pig liver esterase catalyzed hydrolysis of their racemic precursors. With the asymmetric carbon atom possessing a quaternary centre, (+)-Nitramine and (-)-Isonitramine have been synthesized.
TORII SIGERU; INOKUCHI TSUTOMU; MIZUGUCHI KAZUKI; YAMAZAKI MASAO, J. ORG. CHEM., 1979, 44, NO 13, 2303-2307