Highly active 8-benzoxazolyl- or 8-benzothiazolyl-2-alkylquinolinylnickel(II) complexes for ethylene dimerization and vinyl polymerization of norbornene
摘要:
The series of nickel halide complexes LNiX2 (C1-C6, X = Cl; C7-C12, X = Br), where L represents one of 8-benzoxazolyl-2-alkylquinoline or 8-benzothiazolyl-2-alkylquinoline derivatives, have been prepared. The molecular structures of the representative complexes C1, C3, C6 and C11 were determined by single crystal X-ray diffraction. Upon activation with ethylaluminium sesquichloride (EASC), all nickel complex precatalysts exhibited good activities for ethylene dimerization. Furthermore, such nickel pre-catalysts, in the presence of methylaluminoxane (MAO), were capable of the vinyl polymerization norbornene. (C) 2012 Elsevier Ltd. All rights reserved.
Highly active 8-benzoxazolyl- or 8-benzothiazolyl-2-alkylquinolinylnickel(II) complexes for ethylene dimerization and vinyl polymerization of norbornene
摘要:
The series of nickel halide complexes LNiX2 (C1-C6, X = Cl; C7-C12, X = Br), where L represents one of 8-benzoxazolyl-2-alkylquinoline or 8-benzothiazolyl-2-alkylquinoline derivatives, have been prepared. The molecular structures of the representative complexes C1, C3, C6 and C11 were determined by single crystal X-ray diffraction. Upon activation with ethylaluminium sesquichloride (EASC), all nickel complex precatalysts exhibited good activities for ethylene dimerization. Furthermore, such nickel pre-catalysts, in the presence of methylaluminoxane (MAO), were capable of the vinyl polymerization norbornene. (C) 2012 Elsevier Ltd. All rights reserved.
A General, Multimetallic Cross-Ullmann Biheteroaryl Synthesis from Heteroaryl Halides and Heteroaryl Triflates
作者:Kai Kang、Nathan L. Loud、Tarah A. DiBenedetto、Daniel J. Weix
DOI:10.1021/jacs.1c10907
日期:2021.12.29
medicine and materials science, the synthesis of biheteroaryls by cross-coupling remains challenging. We describe here a new, general approach to biheteroaryls: the Ni- and Pd-catalyzed multimetallic cross-Ullmann coupling of heteroaryl halides with triflates. An array of 5-membered, 6-membered, and fused heteroaryl bromides and chlorides, as well as aryltriflates derived from heterocyclic phenols,
Barni,E.; Savarino,P., Journal of Heterocyclic Chemistry, 1979, vol. 16, p. 1579 - 1582
作者:Barni,E.、Savarino,P.
DOI:——
日期:——
BARNI E.; SAVARINO P., J. HETEROCYCL. CHEM., 1979, 16, NO 8, 1579-1582
作者:BARNI E.、 SAVARINO P.
DOI:——
日期:——
Highly active 8-benzoxazolyl- or 8-benzothiazolyl-2-alkylquinolinylnickel(II) complexes for ethylene dimerization and vinyl polymerization of norbornene
作者:Peng Hao、Shengju Song、Tianpengfei Xiao、Yan Li、Carl Redshaw、Wen-Hua Sun
DOI:10.1016/j.poly.2012.06.056
日期:2013.3
The series of nickel halide complexes LNiX2 (C1-C6, X = Cl; C7-C12, X = Br), where L represents one of 8-benzoxazolyl-2-alkylquinoline or 8-benzothiazolyl-2-alkylquinoline derivatives, have been prepared. The molecular structures of the representative complexes C1, C3, C6 and C11 were determined by single crystal X-ray diffraction. Upon activation with ethylaluminium sesquichloride (EASC), all nickel complex precatalysts exhibited good activities for ethylene dimerization. Furthermore, such nickel pre-catalysts, in the presence of methylaluminoxane (MAO), were capable of the vinyl polymerization norbornene. (C) 2012 Elsevier Ltd. All rights reserved.