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

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

Source and publish data:

Tetrahedron p. 14997 - 15004 (1997)

Update date:2022-09-26

Topics: Lewis acid Characterization Yield Selectivity Workup Substrate Scope Reaction Optimization Selective Catalysis Catalytic System tetrahydropyranylation

Authors:

Chandrasekhar

Takhi, Mohamed

Reddy, Y. Ravindra

Mohapatra, Suchismita

Rao, C. Rama

Reddy, K. Venkatram

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Article abstract of DOI:10.1016/S0040-4020(97)01051-X

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.

Full text of DOI:10.1016/S0040-4020(97)01051-X

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