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

被引：84

作者：

Chandrasekhar, S

Takhi, M

Reddy, YR

Mohapatra, S

Rao, CR

Reddy, KV

机构：

[1] Indian Inst. of Chemical Technology

来源：

TETRAHEDRON | 1997年 / 53卷 / 44期

关键词：

D O I：

10.1016/S0040-4020(97)01051-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

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. (C) 1997 Elsevier Science Ltd.

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页码：14997 / 15004

页数：8

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