4-cyano-4-[3-(cyclopentyloxy)-4-methoxyphenyl]-2-[(dimethylamino)methylidine]-cyclohexan-1-one 、
碳酸二甲酯 在
potassium carbonate 作用下,
反应 48.0h,
以37%的产率得到5-(3-cyclopentyloxy-4-methoxyphenyl)-3-methyl-2-oxo-2,3,4,5,6,7-hexahydro-benzo [d][1,3] oxazole-5-carbonitrile