and almost quantitatively to the corresponding β,β-disubstituted α-ethylenic acids by carbonation. The influence of solvants and ligands in this insertion is discussed. Various functional groups are derived from these acids.
Stereospecific Syntheses of Alkenyllithium Reagents from Alkenyl Iodides
作者:G. CAHIEZ、D. BERNARD、J. F. NORMANT
DOI:10.1055/s-1976-25384
日期:——
US3932285A
申请人:——
公开号:US3932285A
公开(公告)日:1976-01-13
Substrate specificity of farnesyl pyrophosphate synthetase
作者:Tokuzo Nishino、Kyozo Ogura、Shuichi Seto
DOI:10.1021/ja00774a045
日期:1972.9
Deprotonation of β,β-disubstituted α,β-unsaturated amides - Mechanism and stereochemical consequences
作者:James R Green、Marek Majewski、Victor Snieckus
DOI:10.1139/v06-112
日期:2006.10.1
detailed study of the lithium dialkylamide induced deprotonation of β,β-disubstituted α,β-unsaturated amides is presented. The preferential γ-Z-deprotonation and stereochemical outcome of substituents on the γ-Z carbon atom are rationalized in terms of a cyclic eight-membered transition state, which is supported by DFT calculations. Analogous deprotonations on cyclohexylidenecarboxamides reveal a delicate