Chlorination of 3,6-di-tert-butyl-1,2-benzoquinone in two-phase catalytic system
摘要:
Chlorination of 3,6-di-tert-butyl-1,2-benzoquinone in a two-phase catalytic system (CH(2)Cl(2), HCl- H(2)O, H(2)O(2), Bu(4)NCl) led to halogen addition at the C=C bond, and subsequent dehydrochlorination of the adduct gave 3,6-di-tert-butyl-4-chloro-1,2-benzoquinone. Chlorination of the latter afforded 3,6-di-tert-butyl-4,5-dichloro-1,2-benzoquinone.
Chlorination of 3,6-di-tert-butyl-1,2-benzoquinone in two-phase catalytic system
摘要:
Chlorination of 3,6-di-tert-butyl-1,2-benzoquinone in a two-phase catalytic system (CH(2)Cl(2), HCl- H(2)O, H(2)O(2), Bu(4)NCl) led to halogen addition at the C=C bond, and subsequent dehydrochlorination of the adduct gave 3,6-di-tert-butyl-4-chloro-1,2-benzoquinone. Chlorination of the latter afforded 3,6-di-tert-butyl-4,5-dichloro-1,2-benzoquinone.
Late transition metal catalysts for olefin polymerization and oligomerization
申请人:Cherkasov Kuzunich Vladimir
公开号:US20060047094A1
公开(公告)日:2006-03-02
This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by two or three heteroatoms and at least one heteroatom is nitrogen; X is a substituted or unsubstituted catecholate ligand provided that the substituted catecholate ligand does not contain a 1,2-diketone functionality.