作者:Roman Mazurkiewicz、Mirosława Grymel、Anna Kuźnik
DOI:10.1007/s00706-003-0166-2
日期:2004.6
or ( ii ) in reaction with DCC and Ph 3P·HBF4 in the presence of catalytic amounts of Ph 3P as well as ( iii ) by a new kind of Mitsunobu reaction with Ph 3P·HBF4 as a nucleophile conjugated acid. The N -acyl-α-triphenylphosphonioglycinates can be effectively used without isolation for a nucleophilic displacement of the triphenylphosphonium group to obtain corresponding α-substituted α-amino acid derivatives
通过( i )在 Et 3 N存在下用 Ph 3 PBr 2进行 磷酸化 或( ii )与 DCC 和 Ph 3 P·HBF 4反应, 将 N-酰基-α-羟基 甘氨酸 盐转化为N- 酰基-α-三苯基膦酰基 糖氨酸盐 。催化量的 Ph 3 P以及( iii )通过新型的 Mitsunobu 反应与 Ph 3 P·HBF 4作为亲核试剂共轭酸存在。的 N-酰基-α-三苯基膦酰基甘氨酸 酯可有效地用于三苯基phosph基团的亲核取代而无需分离以获得相应的α-取代的α-氨基酸衍生物。