TACL5-SILICA-GEL AND TACL5 AS NEW LEWIS-ACID SYSTEMS FOR SELECTIVE TETRAHYDROPYRANYLATION OF ALCOHOLS AND THIOACETALISATION, TRIMERIZATION AND ALDOLISATION OF ALDEHYDES

Authors
CHANDRASEKHAR S TAKHI M REDDY YR MOHAPATRA S RAO CR REDDY KV
Citation
S. Chandrasekhar et al., TACL5-SILICA-GEL AND TACL5 AS NEW LEWIS-ACID SYSTEMS FOR SELECTIVE TETRAHYDROPYRANYLATION OF ALCOHOLS AND THIOACETALISATION, TRIMERIZATION AND ALDOLISATION OF ALDEHYDES, Tetrahedron, 53(44), 1997, pp. 14997-15004
Citations number
26
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
53
Issue
44
Year of publication
1997
Pages
14997 - 15004
Database
ISI
SICI code
0040-4020(1997)53:44<14997:TATANL>2.0.ZU;2-7
Abstract
TaCl5 adsorbed on silicagel has been utilized for the first time as Le wis acid catalyst for protection of aldehydes and alcohols as thioceta ls and THP ethers respectively. Similarly TaCl5 has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisat ion of aldehydes. (C) 1997 Elsevier Science Ltd.