| abstract |
As a process for preparing 2,3-dihydroazepine compoundsnat low cost in a simple and easy manner, there isnprovided a process for the preparation of compounds of thenformula:n nor salts thereof, characterized in that compounds of thenformula:n nor salts thereof are reacted with compounds of the formula:n nor salts thereof to give compounds of the formula: n nor salts thereof, which are then subjected to esterificationnand ring-closing reaction. |