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Study of metal and acid catalysed deprotection of propargyl ethers of alcohols via their allenyl ethers

โœ Scribed by Hari Babu Mereyala; Srinivas Reddy Gurrala; S Krishna Mohan

Publisher
Elsevier Science
Year
1999
Tongue
French
Weight
795 KB
Volume
55
Category
Article
ISSN
0040-4020

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โœฆ Synopsis

A new method for the deprotection of prop-2-ynyl ethers lb-9b is described.

Isomerisation of lb-9b to O-allenyl ethers ld-9d and deprotection by reaction with Hg(OCOCF3)2, aq.HCl, aq.CF3CO2H and best by use of a catalytic amount of OsO4 is described to obtain the alcohols la-9a in good yield. Application of this method for the deprotection of prop-2-enyl ethers 7c,8c,10ยข-13ยข via their corresponding prop-l-enyl ethers 7e,8e,10e-13e to obtain the corresponding alcohols 7a,8a,10a-13a is also described.

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