TaCl5-Silicagel and TaCl5 as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes

S. Chandrasekhar; Mohamed Takhi; Y. Ravindra Reddy; Suchismita Mohapatra; C. Rama Rao; K. Venkatram Reddy

doi:10.1016/S0040-4020(97)01051-X

TaCl₅-Silicagel and TaCl₅ as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes

S. Chandrasekhar, Mohamed Takhi, Y. Ravindra Reddy, Suchismita Mohapatra, C. Rama Rao, K. Venkatram Reddy

Institute for Healthy Aging

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30 Scopus citations

Abstract

TaCl₅ adsorbed on silicagel has been utilized for the first time as Lewis acid catalyst for protection of aldehydes and alcohols as thiocetals and THP ethers respectively. Similarly TaCl₅ has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisation of aldehydes.

Original language	English
Pages (from-to)	14997-15004
Number of pages	8
Journal	Tetrahedron
Volume	53
Issue number	44
DOIs	https://doi.org/10.1016/S0040-4020(97)01051-X
State	Published - 3 Nov 1997

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title = "TaCl5-Silicagel and TaCl5 as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes",

abstract = "TaCl5 adsorbed on silicagel has been utilized for the first time as Lewis acid catalyst for protection of aldehydes and alcohols as thiocetals and THP ethers respectively. Similarly TaCl5 has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisation of aldehydes.",

author = "S. Chandrasekhar and Mohamed Takhi and Reddy, {Y. Ravindra} and Suchismita Mohapatra and Rao, {C. Rama} and Reddy, {K. Venkatram}",

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T1 - TaCl5-Silicagel and TaCl5 as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes

AU - Chandrasekhar, S.

AU - Takhi, Mohamed

AU - Reddy, Y. Ravindra

AU - Mohapatra, Suchismita

AU - Rao, C. Rama

AU - Reddy, K. Venkatram

PY - 1997/11/3

Y1 - 1997/11/3

N2 - TaCl5 adsorbed on silicagel has been utilized for the first time as Lewis acid catalyst for protection of aldehydes and alcohols as thiocetals and THP ethers respectively. Similarly TaCl5 has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisation of aldehydes.

AB - TaCl5 adsorbed on silicagel has been utilized for the first time as Lewis acid catalyst for protection of aldehydes and alcohols as thiocetals and THP ethers respectively. Similarly TaCl5 has been exploited as an useful Lewis acid for chemoselective trimerisation and/or aldolisation of aldehydes.

UR - http://www.scopus.com/inward/record.url?scp=0030809636&partnerID=8YFLogxK

U2 - 10.1016/S0040-4020(97)01051-X

DO - 10.1016/S0040-4020(97)01051-X

M3 - Article

AN - SCOPUS:0030809636

SN - 0040-4020

VL - 53

SP - 14997

EP - 15004

JO - Tetrahedron

JF - Tetrahedron

IS - 44

ER -

TaCl₅-Silicagel and TaCl₅ as new Lewis acid systems for selective tetrahydropyranylation of alcohols and thioacetalisation, trimerisation and aldolisation of aldehydes

Abstract

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