Stereochimie de quelques reactions entre aldehydes et reactifs de Grignard satures et allyliques
作者:H. Felkin、Y. Gault、G. Roussi
DOI:10.1016/s0040-4020(01)92953-9
日期:1970.1
γ-dimethylallyl magnesium bromides) and secondary alkyl [s-butyl magnesium bromide and (1,2-dimethylpropyl) magnesium chloride] Grignardreagents to form pairs of diastereoisomeric alcohols R′—CHMeCHOH—R (R′ = CH2CH, CH2CMe, Et and iPr, respectively). The reactions involving the secondary alkylGrignardreagents are not stereoselective; those involving the allylic Grignardreagents show some stereoselectivity
FLEMING, I.;LEWIS, J. J., J. CHEM., SOC. CHEM. COMMUN., 1985, N 3, 149-151
作者:FLEMING, I.、LEWIS, J. J.
DOI:——
日期:——
PICOLINAMIDE COMPOUNDS WITH FUNGICIDAL ACTIVITY
申请人:DOW AGROSCIENCES LLC
公开号:US20170360038A1
公开(公告)日:2017-12-21
This disclosure relates to picolinamides of Formula I and their use as fungicides.
USE OF PICOLINAMIDE COMPOUNDS WITH FUNGICIDAL ACTIVITY
申请人:DOW AGROSCIENCES LLC
公开号:US20180000084A1
公开(公告)日:2018-01-04
This disclosure relates to picolinamides of Formula I and their use as fungicides.
The diastereoselectivity of electrophilic attack on trigonal carbon adjacent to a stereogenic centre: diastereoselective alkylation and protonation of open-chain enolates having a stereogenic centre at the ? position
作者:Ian Fleming、Jeremy J. Lewis
DOI:10.1039/p19920003257
日期:——
and protonation of the enolates 10, 27, 31 and 36 are diastereoselective in conformity to a general rule, summarised in the drawing 1, governing the stereochemistry of electrophilic attack on a double bond adjacent to a stereogenic centre. The sense of the selectivity is, with one exception, opposite to that of the corresponding nucleophilic attack on a carbonyl groupadjacent to a stereogenic centre