Sodium borohydride and vinyl triflates of α-keto esters: a new combination toward monoalkylated 1,2-diols
摘要:
NaBH4 converts a range of methyl 2-trifluoromethanesulfonyloxy 3-substituted propenoates to the corresponding monoalkylated 1,2-diols smoothly with total regiocontrol. (C) 2002 Elsevier Science Ltd. All rights reserved.
Vinyl triflates of α-keto esters react smoothly with primary amines to provide aziridinecarboxylates in good yields. In all cases, little or no stereoselectivity was observed. A mechanistic study has shown that aziridinecarboxylates are strictly formed under kinetic control. The origin of this lack of stereoselectivity is explained by a non- or poorly stereoselective proton transfer.
Sodium borohydride and vinyl triflates of α-keto esters: a new combination toward monoalkylated 1,2-diols
作者:Vincent Dalla、Bernard Decroix
DOI:10.1016/s0040-4039(02)00120-x
日期:2002.2
NaBH4 converts a range of methyl 2-trifluoromethanesulfonyloxy 3-substituted propenoates to the corresponding monoalkylated 1,2-diols smoothly with total regiocontrol. (C) 2002 Elsevier Science Ltd. All rights reserved.