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.
LATE TRANSITION METAL CATALYSTS FOR OLEFIN POLYMERIZATION AND OLIGOMERIZATION
申请人:ExxonMobil Chemical Patents Inc.
公开号:EP1521758B1
公开(公告)日:2006-05-24
US7247687B2
申请人:——
公开号:US7247687B2
公开(公告)日:2007-07-24
Isopropyl-substituted o-benzoquinones and oxanthrenequinones. Effect of steric shielding of alkyl substituents on reactivity
作者:T. N. Kocherova、N. O. Druzhkov、A. S. Shavyrin、M. V. Arsenyev、E. V. Baranov、V. A. Kuropatov、V. K. Cherkasov
DOI:10.1007/s11172-021-3167-6
日期:2021.5
sterically hindered di- and trisubstituted catechols and o-quinones by the reaction of catechol with isopropanol. Compared to sterically more hindered analogs, o-quinones bearing isopropyl substituents exhibit a higher reactivity toward the formation of oxanthrenequinone derivatives.