N-(4-Methoxy-phenyl)-N-[2-(2-methoxy-phenyl)-ethyl]-malonamic acid (1S,2R,3R,4S)-4,7,7-trimethyl-3-naphthalen-1-yl-bicyclo[2.2.1]hept-2-yl ester 在
dirhodium tetraacetate 、 potassium hydride 、
甲烷磺酰基叠氮化物 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
生成 2-(2-Methoxy-benzyl)-1-(4-methoxy-phenyl)-4-oxo-azetidine-3-carboxylic acid (1S,2R,3R,4S)-4,7,7-trimethyl-3-naphthalen-1-yl-bicyclo[2.2.1]hept-2-yl ester