(3aS,7S,7aS)-7-tert-Butyl-4-[1-cyano-2,2-dimethyl-prop-(E)-ylidene]-2-dimethylamino-6-oxo-3a,6,7,7a-tetrahydro-4H-pyrano[4,3-d]thiazole-7-carbonitrile 以
甲醇 为溶剂,
反应 12.0h,
以7%的产率得到(3aR,7S,7aR)-7-tert-Butyl-4-[1-cyano-2,2-dimethyl-prop-(E)-ylidene]-2-dimethylamino-6-oxo-3a,6,7,7a-tetrahydro-4H-pyrano[4,3-d]thiazole-7-carbonitrile