反应详情

Note that although the procedure is similar to that utilized to synthesize C4 (second method, see Example 5), with the exception that also DMAP was added in the coupling step of Example 5 but not of Example 6, the isolated product is different, being acetic acid 1-[(acetylmethylamino)methyl]-2-{[1-(3′,4′-dichloro-2-fluorobiphenyl-4-yl)cyclopropanecarbonyl]methylamino}ethyl ester in Example 6 and 1-(3′,4′-dichloro-2-fluorobiphenyl-4-yl)cyclopropane carboxylic acid 2-acetylmethylamino-1-(acetylmethylaminomethyl)ethyl ester in Example 5.