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Chiral Phase-Transfer Catalysts (chiral + phase-transfer_catalyst)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Convenient Preparation of Chiral Phase-Transfer Catalysts with Conformationally Fixed Biphenyl Core for Catalytic Asymmetric Synthesis of ,-Alkyl- and ,,,-Dialkyl-,-amino Acids: Application to the Short Asymmetric Synthesis of BIRT-377.

CHEMINFORM, Issue 41 2007
Yong-Gang Wang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Asymmetric Phase-Transfer Catalysis of Homo- and Heterochiral Quaternary Ammonium Salts: Development and Application of Conformationally Flexible Chiral Phase-Transfer Catalysts.

CHEMINFORM, Issue 10 2007
Takashi Ooi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

ChemInform Abstract: New Polymer-Supported Chiral Phase-Transfer Catalysts in the Asymmetric Synthesis of ,-Amino Acids: The Role of a Spacer.

CHEMINFORM, Issue 36 2001
Baptiste Thierry
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Monomeric Cu(II) Complex Containing Chiral Phase-transfer Catalyst as Ligand and Its Asymmetrically Catalytic Reaction

CHINESE JOURNAL OF CHEMISTRY, Issue 2 2008
Zhi-Rong QU
Abstract The thermal treatment of CuCl2 with N -(4,-vinylbenzyl)cinchonidinium chloride (L1) afforded a monomeric discrete homochiral copper(II) complex N -4,-(vinylbenzyl)cinchonidinium trichlorocoprate(II) (1). Their applications to the enantioselectively catalytic alkylation reaction of N -(diphenylmethylidene)glycine tert -butyl ester (3) show that the higher ee value observed in catalyst 1 than that in the corresponding free ligand L1 is probably due to the rigidity enhancement after the coordination of N atom of quinoline ring to the copper ion. [source]

Phase-Transfer-Catalyzed Olefin Isomerization/,-Alkylation of ,-Alkynylcrotonates as a Route for 1,4-Enynes

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2010
Takuya Hashimoto
Abstract The phase-transfer-catalyzed alkylation of ,-alkynylcrotonates was developed as a means to provide 1,4-enynes deconjugated by an all-carbon quaternary center. Extension to the asymmetric version using the chiral phase-transfer catalyst (S)- 3 provided the alkylated compounds with up to 87% ee. [source]