octyl allenecarboxylate 、
5-methyl-2-phenyloxazol-4(5H)-one 在
(S)-bis[3,5-bis(trifluoromethyl)phenyl](3,3-dimethyl-1,5,7-triazabicyclo-[4.3.0]-non-5-ene-8-yl)methanol 作用下,
以
甲苯 为溶剂,
反应 12.0h,
生成 octyl 3-[(S)-5H-5-methyl-4-oxo-2-phenyloxazol-5-yl]-3-butenoate 、 octyl 3-[(R)-5H-5-methyl-4-oxo-2-phenyloxazol-5-yl]-3-butenoate