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US 5,182,409 AGranted
Preparation process of bis(1,2-diaryl-1,2-ethyolenedithiolato)nickel-based complex
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsKeisuke Takuma, Yoshihiro Irizato, Kimitoshi Katho
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Abstract
The present invention is a process for the preparation of bis(1,2-diaryl-1,2-ethylenedithiolato)-nickel-based complex which is characterized by reacting a benzil-based compound or a benzoin-based compound with phosphorus pentasulfide in 1,3-dimethyl-2-imidazolidinone and successively reacting with nickel chloride.
Claims5
A preparation process of bis(1,2-diaryl-1,2-ethylenedithiolato)nickel-based complex represented by the formula (I):
- ##STR91## wherein R.sup.1 and R.sup.2 are individually phenyl or naphthyl and may also have from one to three substituents individually selected from alkyl, cycloalkyl, aryl, alkoxy, phenoxy, hydroxy, alkylamino, arylamino, trifluoromethyl, alkylthio, arylthio, nitro, cyano, heterocycle or halogen atoms and these substituents may connect with each other to form a ring, which is characterized by reacting the compound represented by the formula (II):
- ##STR92## wherein R.sup.1 and R.sup.2 are the same as in the formula (I) and X is C.dbd.O or CHOH, with phosphorus pentasulfide in 1,3-dimethyl-2-imidazolidinone and successively reacting with nickel chloride.
Dependencies are inferred from the claim text.