(3R)-3-hydroxymethyl-4-(4-methoxycarbonylphenyl)-5-oxopiperazine-1-carboxylic acid tert-butyl ester 、
2-萘酚 在
silica gel 、 ethyl acetate hexanes 作用下,
以gave 271 mg (64%) of (3R)-4-(4-methoxycarbonylphenyl)-3-(naphthalen-2-yloxymethyl)-5-oxopiperazine-1-carboxylic acid tert-butyl ester as a white solid的产率得到(3R)-4-(4-methoxycarbonylphenyl)-3-(naphthalen-2-yloxymethyl)-5-oxopiperazine-1-carboxylic acid tert-butyl ester