Difosfina, appropriate system as a catalyst for carbonilau00e7u00e3o, and process for the preparation of an acid alkene - carboxu00eclico or its derivative by a conjugated diene carbonilau00e7u00e3o

摘要

"Difosfina, appropriate system as a catalyst for carbonilau00e7u00e3o, and process for the preparation of an acid alkene - carboxu00eclico or its derivative by carbonilau00e7u00e3o of a conjugated diene.The invention relates to difosfina formula R ^ 1 ^ p - (CH) ~ n ~ PR ^ 2 ^ R ^ 3 ^ in which R ^ 1 ^ is a divalent radical which together with the phosphorus atom to which is connected is a group 2, FOSFA triThe cycle [3.3. 1.1 {3,7}] decila or its derivative, in which one or more carbon atoms are replaced by heterou00e1tomos, R ^ 2 ^.R ^ 3 ^ independently represent a monovalent radical having 1 to 20 atoms or a bivalent radical having 2 to 20 atoms of the n is 4 or 5.And their mixtures as a system of carbonilau00e7u00e3o appropriate containing palladium or a palladium compound, and this kind of difosfina.The invention also relates to a method for the carbonilau00e7u00e3o of a conjugated diene in the presence of that system.