Asymmetric Strecker synthesis by addition of trimethylsilyl cyanide to aldehyde SAMP-hydrazones
作者:Dieter Enders、Michael Moser
DOI:10.1016/j.tetlet.2003.09.098
日期:2003.11.10
The asymmetric 1,2-addition of trimethylsilyl cyanide to aldehyde SAMP-hydrazones in the presence of titanium tetrachloride and diethylether in dichloromethane at −100°C up to room temperature, removal of the chiral auxiliary and acid hydrolysis affords α-amino acids in high enantiomeric excesses (ee=94–97%).
在
四氯化钛和二
乙醚存在下于
二氯甲烷中,于-100°C至室温下,将三甲基甲
硅烷基
氰不对称地添加到
醛类SAMP-hydr中,至室温下,除去手性助剂并进行酸
水解,可在较高温度下获得
α-氨基酸对映体过量(ee = 94–97%)。