Control of chemo- and stereoselectivity in the reactions of organocuprates with .alpha.-oxoketene dithioacetals
作者:R. Karl Dieter、Louis A. Silks、Jeffrey A. Fishpaugh、M. E. Kastner
DOI:10.1021/ja00302a014
日期:1985.8
Les α-oxocetene dithioacetals subissent une substitution selective par les reactifs organo-Cu-Li pour conduire a des β-alkylthio α-β-enones. On examine les effets de la structure, du coordinat de Cu transferable, du reactif Cu et du solvant sur la chimio- et la stereoselectivite de la reaction
Les α-oxocetene dithioacetals 存在未取代选择性的反应性有机-Cu-Li 倾倒导致 des β-烷硫基 α-β-烯酮。在检查les effets de la structure, du coordinat de Cu transferable, du reactif Cu et du solvant sur la chimio- et la立体选择性德拉反应
Alkylation of extended enolates from α-phenylthio crotonate esters
作者:John Durman、Paul G Hunt、Stuart Warren
DOI:10.1016/s0040-4039(00)81858-4
日期:1983.1
Conditions are described fro the formation of enolate anions from substituted α-phenylthiocronate esters and their alkylation at the α-carbon atom.
Extended enolate ions from γ-phenylthio-crotonate esters
作者:Peter Brownbridge、Paul G. Hunt、Stuart Warren
DOI:10.1016/s0040-4039(00)86279-6
日期:1983.1
Substituted γ-phenylthio-crotonate esters (7) can be made by [1,2] and [1,3] PhS shifts: they form extended enolate anions which react with electrophiles at the carbon atom α to the carbonyl group and γ to sulphur.