公开(公告)号：US3901939A

公开(公告)日：1975-08-26

申请号：US40079173

申请日：1973-09-26

Applicant: SNAM PROGETTI

Inventor： NERI CARLO ,  PERROTTI EMILIO

IPC: C07C45/72 ,  C07C120/00 ,  C07C47/02 ,  C07C49/04 ,  C07C76/02

CPC classification number: C07C45/72 ,  C07C49/12

Abstract: A process for preparing dimerization products having the formula X - (A)2 - X in which A is a divalent radical such as -CH2and X is a functional group such as -NO2, wherein a trivalent cobalt insertion product represented by the formula:

WHEREIN L1L2, L3 and L4 may belong to the same ligand molecule, e.g., a planar tetradentate ligand such as bis-(diacetylmonoximeimino)-propane, or to two molecules or a bidentate ligand such as o-phenanthroline, or may be four monodentate ligands and A and X have a significance given above, is pyrolized in an inert atmosphere.