Synthesis of 1, 1-difluoro olefins. II. reactions of ketones with tributylphosphine and sodium chlorodifluoroacetate

SA Fuqua, WG Duncan…

文献索引：Fuqua,S.A. et al. Journal of Organic Chemistry, 1965 , vol. 30, p. 2543 - 2545

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被引用次数: 43

摘要

The presence of 1-(difluoromethy1)-1-cyclohexene (111) among the products isolated from the cyclohexanone reaction (eq. 1) probably merely reflects isomerization of the primary reaction product, di-fluoromethylenecyclohexane (I), although a mechanism for addition of the ylid to the enol of cyclohexanone can be written. The following mechanism is offered to explain the presence of butylidenecyclohexane (IV) and the other butylidene compounds ( ...