Tetrahedron

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

HB Mereyala, SR Gurrala, SK Mohan

Index: Mereyala, Hari Babu; Gurrala, Srinivas Reddy; Mohan, S. Krishna Tetrahedron, 1999 , vol. 55, # 37 p. 11331 - 11342

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Citation Number: 48

Abstract

A new method for the deprotection of prop-2-ynyl ethers 1b–9b is described. Isomerisation of 1b–9b to O-allenyl ethers 1d–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 1a–9a in good yield. Application of this method for the deprotection of prop-2-enyl ethers 7c, 8c, 10c–13c via their corresponding prop-1-enyl ethers 7e, 8e, 10e–13e to ...