Barltrop et al., Journal of the Chemical Society, 1956, p. 2928,2936
作者:Barltrop et al.
DOI:——
日期:——
Regioselective synthesis of substituted 1-indanols, 2,3-dihydrobenzofurans and 2,3-dihydroindoles by electrochemical radical cyclization using an arene mediator
Electrochemical reduction of haloarenes carrying 2-(1-hydroxybut-3-enyl), 2-allyloxy or N-allyl-N-methylamino group in the presence of phenanthrene as a mediator generated the corresponding aryl radicals and gave the corresponding 5-exo cyclization products in good yields. Higher regio- and stereoselectivities than those of usual radical cyclization using AIBN-Bu3SnH were achieved. (C) 2003 Elsevier Ltd. All rights reserved.
New indenyl titanium catalysts for syndiospecific styrene polymerizations
作者:Thomas E Ready、James C.W Chien、Marvin D Rausch
DOI:10.1016/s0022-328x(99)00095-9
日期:1999.6
intermediate organolithium complexes with chlorotrimethylsilane. The corresponding titanium complexes were synthesized in excellent yields from reactions of the trimethylsilyl derivatives with TiCl4. The titanium complexes were evaluated as styrenepolymerizationcatalysts in toluene solution when activated by methylaluminoxane. In general, catalytic activities decreased with each additional methyl substituent