DIRECT NUCLEOPHILIC ACYLATION BY THE LOW-TEMPERATURE, IN SITU GENERATION OF ACYLLITHIUM REAGENTS; a-HYDROXY KETONES FROM KETONES: 3-HYDROXY-2,2,3-TRIMETHYLOCTAN-4-ONE FROM PINACOLONE
Synthesis of .alpha.-hydroxy ketones by direct, low-temperature, in situ nucleophilic acylation of aldehydes and ketones by acyllithium reagents
作者:Dietmar Seyferth、Robert M. Weinstein、Richard C. Hui、Wei Liang Wang、Colin M. Archer
DOI:10.1021/jo00047a014
日期:1992.10
The reaction of n-, sec-, and tert-butyllithium with CO at atmospheric pressure at -110 and -135-degrees-C in the appropriate solvent system in the presence of ketones and aldehydes generates the acyllithium, RC(O)Li, which reacts with the carbonyl compound to give the alpha-hydroxy ketone, generally in good yield. Reactions with aldehydes are limited in scope, working well with the t-BuLi-derived acyllithium reagents, but not with n-BuC(O)Li.
High-yield acyl anion trapping reactions: syntheses of .alpha.-hydroxy ketones and 1,2-diketones
作者:Dietmar Seyferth、Robert M. Weinstein、Wei Liang Wang
DOI:10.1021/jo00155a057
日期:1983.4
SEYFERTH, D.;WEINSTEIN, R. M.;WANG, W. -L., J. ORG. CHEM., 1983, 48, N 7, 1144-1146
作者:SEYFERTH, D.、WEINSTEIN, R. M.、WANG, W. -L.
DOI:——
日期:——
DIRECT NUCLEOPHILIC ACYLATION BY THE LOW-TEMPERATURE, IN SITU GENERATION OF ACYLLITHIUM REAGENTS; a-HYDROXY KETONES FROM KETONES: 3-HYDROXY-2,2,3-TRIMETHYLOCTAN-4-ONE FROM PINACOLONE