５−（４−［４−（５−シアノ−３−インドリル）ブチル］−１−ピペラジニル）ベンゾフラン−２−カルボキサミドの製造方法

摘要

Preparation of 5-(4-[4-(5-cyano-3-indolyl)-butyl]-1-piperazinyl)-benzofuran-2-carboxamide (A) and/or their salts comprises either reacting a heterocyclic compound (I) with 3-(4-piperazine-1-yl-butyl)-indol-5-carbonitrile by transition metal catalyzed coupler using palladium complex; and /or converting the obtained (A) to its acid addition salt by treating with an acid; or reacting a heterocyclic compound (II) with 3-(4-oxo-butyl)-1H-indol-5-carbonitrile by reductive amination; and/or converting the obtained (A) to an acid addition salt by treating with an acid. Preparation of 5-(4-[4-(5-cyano-3-indolyl)-butyl]-1-piperazinyl)-benzofuran-2-carboxamide (A) and/or their salts comprises either reacting a heterocyclic compound of formula (I) with 3-(4-piperazine-1-yl-butyl)-indol-5-carbonitrile by transition metal catalyzed coupler using palladium complex; and/or converting the obtained (A) to its acid addition salt by treating with an acid; or reacting a heterocyclic compound of formula (II) (as a base or HX salt) with 3-(4-oxo-butyl)-1H-indol-5-carbonitrile by reductive amination; and/or converting the obtained (A) to an acid addition salt by treating with an acid. L : Cl, Br, I, SO 2F, SO 2CF 3, SO 2C 2F 5; and X : Cl or Br. [Image].