2,4,6-trichloropyrimidine. Reaction with 4-substituted phenolate ions
作者:Thomas J. Delia、A. Nagarajan
DOI:10.1002/jhet.5570350201
日期:1998.3
A systematic investigation of the reactivity of 2,4,6-trichloropyrimidine with phenoxide nucleophiles has been conducted. Conditions have been described which lead to mono-, di-, and trisubstituted-pyrimidines. Unexpected product distributions for mono- and disubstituted products were observed and explanations for these results are offered.
91. Aryloxy-derivatives of pyrimidines, quinoxalines, and quinolines
作者:Diana Lockhart、E. E. Turner
DOI:10.1039/jr9370000424
日期:——
Process for Producing Olefin Copolymerization Catalyst and Process for Producing Olefin Copolymer
申请人:NAKAHARA Shinya
公开号:US20080227937A1
公开(公告)日:2008-09-18
A process for producing an olefin copolymerization catalyst, comprising the step of contacting, with one another, (A) a solid catalyst component containing a titanium atom, a magnesium atom and a halogen atom, (B) an organoaluminum compound and/or organoaluminumoxy compound, and (C) a nitrogen-containing aromatic heterocyclic compound, whose one or more carbon atoms adjacent to its nitrogen atom are linked to an electron-donating group, or a group containing an electron-donating group; and a process for producing an olefin copolymer using the an olefin copolymerization catalyst.