Cross-Coupling Reaction of α-Chloroketones and Organotin Enolates Catalyzed by Zinc Halides for Synthesis of γ-Diketones
作者:Makoto Yasuda、Shoki Tsuji、Yusuke Shigeyoshi、Akio Baba
DOI:10.1021/ja0258172
日期:2002.6.1
catalyzed by zinc halides. In contrast to the exclusive formation of 1,4-diketones 3 under catalytic conditions, uncatalyzed reaction of 1 with 2 gave aldol-type products 4 through carbonyl attack. NMR study indicates that the catalyzed reaction includes precondensation between tin enolates and α-haloketones providing an aldol-type species and their rearrangement of the oxoalkyl group with leaving halogen
Synthesis of 1,4-Diketones: Unusual Coupling of Tin Enolates with α-Chloro Ketones Catalyzed by Zinc Halides
作者:Makoto Yasuda、Shoki Tsuji、Ikuya Shibata、Akio Baba
DOI:10.1021/jo971624z
日期:1997.11.1
Efficient α-chlorination of carbonyl containing compounds under basic conditions using methyl chlorosulfate
作者:Saúl Silva、Christopher D. Maycock
DOI:10.1016/j.tetlet.2018.02.036
日期:2018.3
An efficient method for the α-chlorination of ketonesunder basic conditions is described using methyl chlorosulfate. Its applicability for the chlorination of other functional groups has also been studied and it is equally useful for the synthesis of α-chloroesters and amides. Methyl chlorosulfate is described for the first time as a positive chlorine source. Some aldol reactions which occur during