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.
Free radical ring expansion by three and four carbons
作者:Paul Dowd、Soo Chang Choi
DOI:10.1021/ja00255a071
日期:1987.10
Nouvelle methode d'agrandissement de cycles de β-ceto esters a 5, 6, 7 carbones par une reaction radicalaire regioselective pour acceder a des cycles a 8, 9, 10, 11 atomes de carbone
Nouvelle methode d'agrandissement de Cycles de β-cetoesters a 5, 6, 7 carbones par une 反应激进分子区域选择性倾倒剂 a des Cycles a 8, 9, 10, 11 atomes de carbone
Tiffeneau; Tchoubar; Saiaslambert, Bulletin de la Societe Chimique de France, 1947, p. 445,448
作者:Tiffeneau、Tchoubar、Saiaslambert
DOI:——
日期:——
Electroorganic chemistry. 124. Electroreductive intramolecular coupling of .alpha.-(.omega.-bromoalkyl) .beta.-keto esters
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.