Heterocycles from heterocycles. 1,3-Diaryl-4,5-imidazolidinediones from 1,3,5-triarylhexahydro-1,3,5-triazines and oxalyl chloride
摘要:
1,3-Diaryl-4,5-imidazolidinediones ( 6 ) are easily synthesized from 1,3,5-triarylhexahydro-1,3,5-triazines ( 1 ) and oxalyl chloride ( 5 ) in a reaction not likely to involve the zwitterionic intermediate ( 3 ) of the N-methylenearylamine dimer, but viewing the sequential pick up of two units of the monomer ( 2 ) by oxalyl chloride ( 5 ). The essential role of ethyl alcohol added to the reaction mixture is recognized. Reaction conditions have been optimized and some ten imidazolidinediones ( 6 ) were prepared in good to excellent yields. Geometric parameters of 6 were obtained by X-ray diffraction analysis: all the nuclei are found almost in one plane except for a small twist of the phenyl rings about the C-N bond.
The present invention relates to a new crystal form of bis(diphenylimidazolidinetrithione-κS4, κS5)-, (SP-4-1)-nickel(II), a printing ink formulation for security printing and security documents, comprising the new crystal form of bis(diphenylimidazolidinetrithione-κS4, κS5)-, (SP-4-1)-nickel(II) as well as its use as IR absorber.
THE USE OF ARYL OR HETEROARYL SUBSTITUTED DITHIOLENE METAL COMPLEXES AS IR ABSORBERS
申请人:BASF SE
公开号:EP2643416B1
公开(公告)日:2019-08-07
CRYSTAL FORM OF A DITHIOLENE NICKEL COMPLEX
申请人:BASF SE
公开号:EP3684759B1
公开(公告)日:2021-11-10
NEW CRYSTAL FORM OF A DITHIOLENE METAL COMPLEX
申请人:BASF SE
公开号:US20200190127A1
公开(公告)日:2020-06-18
The present invention relates to a new crystal form of bis(diphenylimidazolidinetrithione-κS4, κS5)-, (SP-4-1)-nickel(II), a printing ink formulation for security printing and security documents, comprising the new crystal form of bis(diphenylimidazolidinetrithione-κS4, κS5)-, (SP-4-1)-nickel(II) as well as its use as IR absorber.