(R)-2-methyl-propane-2-sulfinic acid [7-bromo-4,4-difluoro-3,4-dihydro-2H-naphthalen-(1E)-ylidene]-amide 、
二氟溴乙酸乙酯 以the product [(R)-7-bromo-4,4-difluoro-1-((R)-2-methyl-propane-2-sulfinylamino)-1,2,3,4-tetrahydro-naphthalen-1-yl]-difluoro-acetic acid ethyl ester (58% yield) was obtained as a brown solid的产率得到[(R)-7-bromo-4,4-difluoro-1-((R)-2-methyl-propane-2-sulfinylamino)-1,2,3,4-tetrahydro-naphthalen-1-yl]-difluoro-acetic acid ethyl ester