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Polymeric salen-Ti(IV) or V(V) complex catalyzed asymmetric synthesis of O-acetylcyanohydrins from KCN, Ac2O and aldehydes
Huang, W; Song, YM; Wang, J; Cao, GY; Zheng, Z
KeywordO-acetyl Cyanohydrins Recyclable Polymeric Salen-ti(Iv) Complexes Polymeric Salen-v(v) Complexes Potassium Cyanide Alde-hyde Asymmetric Cyanation
Source PublicationTETRAHEDRON
2004-11-08
DOI10.1016/j.tet.2004.08.078
Volume60Issue:46Pages:10469-10477
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Organic
WOS Research AreaChemistry
WOS KeywordHIGHLY ENANTIOSELECTIVE RESOLUTION ; CHIRAL (SALEN)TITANIUM COMPLEXES ; SALEN COMPLEXES ; TRIMETHYLSILYL CYANIDE ; TERMINAL EPOXIDES ; IONIC LIQUIDS ; CYANOHYDRINS ; CYANOSILYLATION ; EPOXIDATION ; KETONES
AbstractPolymeric salen-Ti(IV) and V(V) complexes were employed in the enantioselective O-acetyl cyanation of aldehydes with potassium cyanide and acetic anhydride. The crosslinked polymeric salen-Ti(IV) catalyst exhibited good activities and enantioselectivities, up to 91 % ee with 99 % conversion was obtained at -20degreesC with 1 mol % of catalyst (based on bimetallic catalytic unit). Moreover, six consecutive recyclings with the easily recovered crosslinked polymeric catalyst showed no obvious decrease in either activity or enantioselectivity. Linear polymeric salen-V(V) catalyst showed good catalytic efficiency too, up to 94 % ee with 99 % conversion was obtained at -42degreesC with 5 mol % of catalyst. (C) 2004 Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000224632300010
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139280
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
Recommended Citation
GB/T 7714
Huang, W,Song, YM,Wang, J,et al. Polymeric salen-Ti(IV) or V(V) complex catalyzed asymmetric synthesis of O-acetylcyanohydrins from KCN, Ac2O and aldehydes[J]. TETRAHEDRON,2004,60(46):10469-10477.
APA Huang, W,Song, YM,Wang, J,Cao, GY,&Zheng, Z.(2004).Polymeric salen-Ti(IV) or V(V) complex catalyzed asymmetric synthesis of O-acetylcyanohydrins from KCN, Ac2O and aldehydes.TETRAHEDRON,60(46),10469-10477.
MLA Huang, W,et al."Polymeric salen-Ti(IV) or V(V) complex catalyzed asymmetric synthesis of O-acetylcyanohydrins from KCN, Ac2O and aldehydes".TETRAHEDRON 60.46(2004):10469-10477.
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