反应详情

1-(1,4-Benzodioxan-2-yl)-2-bromoethanol (formula H) (12 g) prepared according to J. Med. Chem. 13, 169, (1970), is treated with 1-[(2,6-dimethylphenyl)aminocarbonylmethyl]piperazine (14 g) in 500 ml of ethanol. The remainder of the procedure is described in Example 1 above and 21 g of the 1-[2-(1,4-benzodioxan-2-yl)-2-hydroxyethyl]-4-[(2,6-dimethylphenyl)aminocarbonylmethyl]piperazine is obtained from hexane. The dihydrochloride salt has a melting point of 175°-176° C.