2-phenyl-1,3-oxathiolane 、
dibenzyl 2-diazomalonate 在
(4S,4'S)-2,2'-(1-(3,5-dimethylphenyl)propane-2,2-diyl)bis(4-isopropyl-4,5-dihydrooxazole) 、 copper(II) bis(trifluoromethanesulfonate) 作用下,
以
二氯甲烷 为溶剂,
生成
dibenzyl (2R)-2-phenyl-1,4-oxathiane-3,3-dicarboxylate 、 dibenzyl (2S)-2-phenyl-1,4-oxathiane-3,3-dicarboxylate