(E)-OXAZOLONES AND (Z)-OXAZOLONES;
DIELS-ALDER CYCLOADDITION;
ALPHA-AMINO-ACIDS;
D O I:
10.1016/S0040-4020(01)86269-4
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The Diels-Alder reaction between both geometric isomers (Z)- or (E)-2-phenyl-4-benzylidene-5(4H)-oxazolone and cyclopentadiene is studied. The cycloadducts are converted into the aminoacids through simple reactions allowing the synthesis of the four d,l-pairs of 2-amino-3-phenylnorbornane-2-carboxylic acids.