反应详情

Methyl 7-chloro-3-oxo-3,4-dihydro-2H-1,5-benzoxathiepin-4-carboxylate is treated with 1-bromo-3-chloropropane in the same manner as described in Reference Example 25 to give methyl 7-chloro-4-(3-chloropropyl)-3-oxo-3,4-dihydro-2H-1,5-benzoxathiepin-4-carboxylate as a colorless oil.