2,3-Dihydro-2,2-dimethyl-3-oxazolcarbonsaeure-methylester 、 Phenylglyoxylsaeure-((1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)-1-cyclohexyl)ester 以
苯 为溶剂,
生成 3,3-Dimethyl-endo-7-phenyl-4,6-dioxa-2-azabicyclo<3.2.0>heptan-2,7-dicarbonsaeure-<2-methyl-7-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>>diester 、
3,3-Dimethyl-endo-7-phenyl-4,6-dioxa-2-azabicyclo<3.2.0>heptan-2,7-dicarbonsaeure-<2-methyl-7-<(1R,2S,5R)-5-methyl-2-(1-methyl-1-phenylethyl)cyclohexyl>>diester