2246335-51-1Relevant articles and documents
Pd-catalyzed asymmetric aza-Wacker-type cyclization reaction of olefinic tosylamides
Jiang, Feng,Wu, Zhengxing,Zhang, Wanbin
scheme or table, p. 5124 - 5126 (2010/11/16)
The Pd-catalyzed asymmetric aza-Wacker-type cyclization reaction of the olefinic tosylamides with molecular oxygen as the green oxidant was developed. Under the optimized conditions, excellent catalytic activity and good enantioselectivity with up to 74%
Pd(II)/tBu-quinolineoxazoline: An Air-Stable and modular chiral catalyst system for enantioselective oxidative cascade cyclization
He, Wei,Yip, Kai-Tai,Zhu, Nian-Yong,Yang, Dan
supporting information; experimental part, p. 5626 - 5628 (2010/03/02)
[Chemical Equation Presented] An air-stable and structurally tunable chiral tBu-quinolineoxazoline/Pd(II) catalyst system has been developed for the enantioselective oxidative cascade cyclization of a variety of disubstituted olefinic substrates, with the apparent advantages of good yields and excellent enantioselectivities (up to 98% ee) and diastereoselectivities (dr >24:1). A transition-state model has also been proposed to account for the excellent stereocontrol.
Palladium(II)-catalyzed enantioselective aerobic dialkoxylation of 2-propenyl phenols: A pronounced effect of copper additives on enantioselectivity
Zhang, Yang,Sigman, Matthew S.
, p. 3076 - 3077 (2008/04/18)
A direct O2-coupled Pd(II)-catalyzed enantioselective dialkoxylation of 2-propenylphenols has been developed by utilizing chiral quinoline oxazoline ligands. A detrimental effect of added copper salts on enantioselectivity was observed which is attributed to the displacement of the chiral ligand off of Pd(II). Copyright
Steric effects of the ligand in the enantioselective palladium-catalyzed allylic alkylation using chiral oxazolinylpyridines
Chelucci, Giorgio,Medici, Serenella,Saba, Antonio
, p. 543 - 550 (2007/10/03)
Eight new chiral oxazolinylpyridines were prepared and assessed in the enantioselective palladium-catalyzed allylic substitution of 1,3- diphenylprop-2-enyl acetate with dimethyl malonate. Catalytic activity and enantioselectivity were found to be highly