3-甲氧基苯异氰酸 、
[1'(R)-α-methylbenzyl]aziridine-2(R)-carboxylate (-)-menthol ester 在
magnesium bromide 作用下,
以
1,4-二氧六环 为溶剂,
以87%的产率得到(R)-3-(3-Methoxy-phenyl)-2-oxo-1-((R)-1-phenyl-ethyl)-imidazolidine-4-carboxylic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester