Chemistry Letters, Vol.34, No.6, 842-843, 2005
Ammonium phenoxides-catalyzed syn-selective aldol reaction between an aldehyde and an trimethylsilyl enolate
Aldol reactions between aldehydes and trimethylsilyl enolates generated from ketones or thioesters proceeded smoothly in the presence of a Lewis base catalyst such as tetrabutylammonium phenoxide or p-methoxyphenoxide in THF to afford the corresponding aldols in high yields with high syn-selectivity.