Patent ID: 8299304
Filing Date: 2012-10-30
Classification: C07C,C08G,C09K,G02F

Abstract:
1. A method for the preparation of the diamine compound represented by formula 1: wherein R comprising: a) preparing a compound of formula 2 by reacting 4′-alkylbicyclohexyl-4-one compound with 1,3,5-tribromobenzene: wherein R b) preparing a compound of formula 3 by reacting the compound of formula 2 with p-toluenesulfonic acid 1-hydrate: wherein R c) preparing a compound of formula 4 by reacting the compound of formula 3 with lithium bis(trimethylsilyl)amide, (dibenzylideneacetone)palladium, and tricyclohexylphosphine in combination: wherein R d) performing the addition of hydrogen to the compound of formula 4 under a Pd/C catalyst and separating a trans isomer compound therefrom.