反应详情

2′,3′-Difluoro-4′-(7,7,8,8,9,9,10,10,10-nonafluoro-decyloxy)-biphenyl-4-carboxylic acid 4-[(R)-1-trifluoromethyl-heptyloxycarbonyl]-phenyl ester (15B) was prepared from 2′,3′-difluoro-4′-(7,7,8,8,9,9,10,10,10-nonafluoro-decyloxy)-biphenyl-4-carboxylic acid (14B) as described in the preparation 2′,3′-difluoro-4′-(5,5,6,6,7,7,8,8,8-nonafluoro-octyloxy)-biphenyl-4-carboxylic acid 4-[(R)-1-trifluoromethyl-heptyloxycarbonyl]-phenyl ester (15A) yielding 2′,3′-difluoro-4′-(7,7,8,8,9,9,10,10,10-nonafluoro-decyloxy)-biphenyl-4-carboxylic acid 4-[(R)-1-trifluoromethyl-heptyloxycarbonyl]-phenyl ester (15B)) as a white solid (88%).