abstract |
this invention relates to a method for the manufacture of (s) -6-chloro- (cyclopropylethynyl) -1,4-dihydro-4- (trifluoromethyl) -2h-3,1-benzoxazin-2-one pure. specifically, this invention relates to a flow synthesis method for the manufacture of (6) -6-chloro- (cyclopropylethynyl) -1,4-dihydro-4- (trifluoromethyl) -2h-3,1- benzoxazin-2-one. |