Palladium-catalyzed synthesis of vinyl phosphines from ketones
作者:Scott R. Gilbertson、Zice Fu、Gale W. Starkey
DOI:10.1016/s0040-4039(99)01819-5
日期:1999.12
palladium-catalyzed conversion of vinyl triflates to vinyl phosphines is reported. This process allows for the synthesis of vinyl phosphines fromketones. Selective enolization of a variety of ketones followed by trapping of the enolate as the vinyl triflate is reported. The vinyl triflates are then converted to the corresponding vinyl phosphine through palladium catalysis. The resulting vinyl phosphines can then
Palladacycle-Catalyzed Olefinic C–P Cross-Coupling of Alkenylsulfonium Salts with Diarylphosphines to Access Alkenylphosphines
作者:Jie Zhu、Yun Ye、Yinhua Huang
DOI:10.1021/acs.organomet.2c00330
日期:2022.8.22
An efficient olefinic C–P cross-coupling of alkenylsulfonium salts with secondary diarylphosphines is reported. The use of a palladacycleenables the facile formation of a C–P bond at the alkenyl moiety of alkenylsulfonium salts tolerating a wide range of functional groups under mildconditions. This protocol provides an easy access to various alkenylphosphine products in good to high yields with high
Reznikov; Krivchun; Bel'skii, Russian Journal of General Chemistry, 2000, vol. 70, # 7, p. 1032 - 1036
作者:Reznikov、Krivchun、Bel'skii、Skvortsov
DOI:——
日期:——
Method of Recycling A Recylable Plastic
申请人:Ramesh Swaminathan
公开号:US20070083068A1
公开(公告)日:2007-04-12
The present invention provides a method of recycling a plastic thereby forming a narrow spectrum of hydrocarbons having from 4 to 14 carbon atoms that can be directly used as gasoline without additional processing or refining. The method includes the step of feeding the plastic, selected from the group of polyethylene, polypropylene, polystyrene, and combinations thereof, into a heated vessel for melting. The method also includes the step of decomposing the plastic at a temperature of from 400° C. to 500° C. in the presence of a metallocene catalyst and a zeolitic catalyst thereby forming the hydrocarbons having from 4 to 14 carbon atoms. The metallocene catalyst includes dichlorobis(2-methylindenyl)zirconium (IV). The zeolitic catalyst includes ammonium Y zeolite and has a pore size of from 1 to 4 Angstroms.