Enantioselective allylation of aldehydes catalyzed by chiral indium(iii) complexes immobilized in ionic liquids
作者:Jun Lu、Shun-Jun Ji、Teck-Peng Loh
DOI:10.1039/b500086f
日期:——
In the presence of chiral catalytic complexes prepared from In(OTf)3 and chiral PYBOX ligands, allytributylstannane reacted with aldehydes in ionic liquids to afford the corresponding homoallylic alcohols in high enantioselectivities (86–94% ee) and good yields (68–89%); the chiral catalysts immobilized in ionic liquids could be reused with comparable enantioselectivities and yields.
Catalytic enantioselective allylation of aldehydes via a moisture-tolerant chiral BINOL–In(III) complex
作者:Yong-Chua Teo、Ee-Ling Goh、Teck-Peng Loh
DOI:10.1016/j.tetlet.2005.07.064
日期:2005.9
A moisture-tolerant chiral indium complex has been developed to effect good enantioselectivities in the addition of allyltributylstannanes to aldehydes. The allylation of a variety of aromatic, α,β-unsaturated and aliphatic aldehydes resulted in both moderate to good yields and high enantioselectivities (up to 86% ee).
Catalytic asymmetric allylation of aldehydes via a chiral indium(iii) complex
作者:Yong-Chua Teo、Kui-Thong Tan、Teck-Peng Loh
DOI:10.1039/b412736f
日期:——
A chiral indium complex has been discovered to effect high enantioselectivities in the addition of allyltributyl stannanes to aldehydes. The allylation of a variety of aromatic, alpha,beta-unsaturated and aliphatic aldehydes resulted in good yields and high enantioselectivities (90-96% ee).
Synthesis and absolute stereochemistry of hagen's-gland lactones in some parasitic wasps (Hymenoptera:Braconidae)
作者:Gregory C. Paddon-Jones、Christopher J. Moore、Douglas J. Brecknell、Wilfried A. König、William Kitching
DOI:10.1016/s0040-4039(97)00661-8
日期:1997.5
Efficient syntheses and enantioselective gas chromatography have confirmed the structures and established the absolute stereochemistry of some novel bicyclic lactones (tetrahydrofurofuranones) in species of parasitic wasps (Hymenoptera:Braconidae). The co-occurring γ-lactones, octan-4-olide and dodecan-4-olide, have the (R)-configuration.
Optisch aktive Alkohole aus 1,3-Dioxan-4-onen: eine praktikable Variante der enantioselektiven Synthese unter nucleophiler Substitution an Acetal-Zentren