93260-12-9Relevant academic research and scientific papers
The catalytic asymmetric Fischer indolization
Mueller, Steffen,Webber, Matthew J.,List, Benjamin
supporting information; experimental part, p. 18534 - 18537 (2012/01/31)
The first catalytic asymmetric Fischer indolization is reported. In the presence of a 5 mol % loading of a novel spirocyclic chiral phosphoric acid, 4-substituted cyclohexanone-derived phenylhydrazones undergo a highly enantioselective indolization. Efficient catalyst turnover was achieved by the addition of a weakly acidic cation exchange resin, which removes the generated ammonia. The reaction can be conducted under mild conditions and gives various 3-substituted tetrahydrocarbazoles in generally high yields.
Penultimate effect in ethylene-styrene copolymerization and the discovery of highly active ethylene-styrene catalysts with increased styrene reactivity
Arriola, Daniel J.,Bokota, Marilyn,Campbell Jr., Richard E.,Klosin, Jerzy,LaPointe, Robert E.,Redwine, O. David,Shankar, Ravi B.,Timmers, Francis J.,Abboud, Khalil A.
, p. 7065 - 7076 (2008/02/08)
For the first time commercially relevant catalysts for the copolymerization of ethylene and styrene have been identified. The catalysts maintain very high copolymer efficiencies at relatively high reactor temperatures without sacrificing styrene comonomer
