Preparation of 2,3,3',4' -biphenyltetracarboxylic acid tetraester
申请人:Tsuji Tetsuro
公开号:US20050090683A1
公开(公告)日:2005-04-28
2,3,3′,4′-Biphenyltetracarboxylic acid tetraester is predominantly produced by a process in which a phthalic acid diester is subjected to oxidative-coupling reaction in the presence of molecular oxygen and a catalyst comprising a rhodium-containing compound,.