Enantioselective Synthesis of Cyanohydrins by a Novel Aluminum Catalyst
作者:Barry M. Trost、Silvia Martínez-Sánchez
DOI:10.1055/s-2005-863716
日期:——
The development of a new chiral aluminum catalyst is reported. This catalyst has been applied efficiently to the asymmetric cyanosilylation of aldehydes.
报道了一种新型手性铝催化剂的开发。该催化剂已有效地应用于醛的不对称氰基硅烷化。
Stereoselective synthesis of thienyl and furyl analogues of ephedrine
作者:Franz Effenberger、Joachim Eichhorn
DOI:10.1016/s0957-4166(96)00528-9
日期:1997.2
The stereoselective syntheses of thienyl and furyl analogues of ephedrine starting from (R)- and (S)-cyanohydrins, respectively, are described. Addition of methyl Grignard to the O-trimethylsilyl protected optically active cyanohydrins (R)- and (S)-3 and hydrogenation of the resulting imino intermediates gives the erythro-2-amino alcohols 4 with high diastereoselectivity. Their reductive methylation