Moreau,C. et al., Bulletin de la Societe Chimique de France, 1970, p. 545 - 549
作者:Moreau,C. et al.
DOI:——
日期:——
US4026911A
申请人:——
公开号:US4026911A
公开(公告)日:1977-05-31
Process for the preparation of ketoalkynoic acids and use of the process
申请人:Miles Laboratories, Inc.
公开号:US04026911A1
公开(公告)日:1977-05-31
Reaction of a 2-methyl-2-(alkenyl)-1,3-dioxolane with an .alpha.,.omega.-dihalogenoalkane to obtain a 2-methyl-2-(.omega.-chloroalkynyl)-dioxolane, conversion of the latter to a corresponding nitrile, and hydrolysis of the nitrile to form a ketoalkynoic acid is a novel process for preparing the acid. Use of the process in the synthesis of 2-(substituted)-cyclopentane-1,3,4-triones improves that synthesis.