cas 828918-24-7, 2,6-Bis[(4R)-4,5-dihydro-4-(1-methylethyl)-5,5-diphenyl-2-oxazolyl]pyridine

Articles about 828918-24-7Total 5 be found

The Asymmetric Aza-silyl-Prins Reaction: Synthesis of Enantiopure Piperidines
The design and development of the first asymmetric aza-silyl-Prins reaction is reported, giving rise to valuable and diverse piperidines and pipecolic acid derivatives in both high yields and as single enantiomers. The creation of a novel chiral auxiliary-homoallylic amine for the aza-silyl-Prins reaction is essential to its success.
Mittapalli, Ramana R.,Guesné, Sebastien J. J.,Parker, Robert J.,Klooster, Wim T.,Coles, Simon J.,Skidmore, John,Dobbs, Adrian P.
p. 350 - 355
(2019/01/11)

A Ce(OTf)3/PyBox catalyzed enantioselective Hosomi-Sakurai reaction of aldehydes with allyltrimethylsilane
An efficient enantioselective Hosomi-Sakurai reaction catalyzed by a chiral Ce(OTf)3/PyBox complex has been explored. In the presence of 20 mol% of a chiral catalytic complex prepared in situ from Ce(OTf)3 and 2,6-bis[(S)-4-isopropyl
Zhao, Song,Zhang, Xulong,Zhang, Yuwei,Yang, Huanhuan,Huang, Yan,Zhang, Kui,Du, Ting
p. 7734 - 7737
(2015/10/12)

Enantioselective oxidation of olefins catalyzed by chiral copper bis(oxazolinyl)pyridine complexes: A reassessment
Copper complexes of chiral tridentate pybox ligands synthesized using a modified procedure have been studied as catalysts for the enantioselective allylic oxidation of olefins. A variety of olefins have been used in this reaction. Using 5 mol% of a Cu(II)
Ginotra, Sandeep K.,Singh, Vinod K.
p. 3573 - 3581
(2007/10/03)

Asymmetric Kharasch Reaction: Catalytic Enantioselective Allylic Oxidation of Olefins Using Chiral Pyridine Bis(diphenyloxazoline) - Copper Complexes and tert-Butyl Perbenzoate
Copper complexes of chiral pyridine bis(diphenyloxazoline)-type ligands have been studied as catalysts for the enantioselective allylic oxidation of olefins. Using 2.5-5 mol % of these chiral catalysts and tert-butyl perbenzoate as oxidant, optically active allylic benzoates were obtained in up to 86% ee. A variety of copper salts was studied under different conditions and in different solvents. Acetone was found to be a superior solvent for the reaction. Use of phenylhydrazine in conjunction with the chiral copper complex played a crucial role in increasing the rate of the reaction. Use of 4 ? molecular sieves increased the optical yield of product in almost every case.
Sekar, Govindasamy,Dattagupta, Arpita,Singh, Vinod K.
p. 2961 - 2967
(2007/10/03)

Synthesis of homochiral bis(oxazolinyl)pyridine type ligands for asymmetric cyclopropanation reactions
Homochiral bis(oxazolinyl)pyridine type ligands were synthesized from (S)-valine and converted into their Cu(II) complexes. Reduction of these Cu(II) complexes into Cu(I) with diazoesters was studied by uv-vis and epr spectroscopy. The enantioselective cy
Gupta,Bhuniya,Singh
p. 13725 - 13730
(2007/10/02)