反应详情

By substituting 5-(3-dimethylaminopropylidene)-3-methylsulfonyl-5H-dibenzo[a,d]cycloheptene (β-isomer), (Product of Example 23, Step G.), for the 5-(3-dimethylaminopropylidene)-5H-dibenzo[a,d]cycloheptene of Example B 6, and following substantially the procedure of Example 6, Steps A. and B., 5-(3-methylaminopropylidene)-3-methylsulfonyl-5H-dibenzo[a,d]cycloheptene (β-isomer) is obtained in the form of a yellow oil. The product is converted to the hydrogen maleate that melts at 175°-176° C.