Highly selective syn glycolate aldol reactions with boron enolates of Masamune norephedrine esters
作者:Merritt B Andrus、B.B.V Soma Sekhar、Timothy M Turner、Erik L Meredith
DOI:10.1016/s0040-4039(01)01521-0
日期:2001.10
Boronenolates of norephedrine-based glycolate esters reacted with various aldehydes to produce syn aldol products in high yield and selectivity. The outcome is consistent with a Z enolate reacting through a closed transition state with reversal of the enolate facial selectivity relative to the propionate enolates.