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South African Journal of Chemistry

versión On-line ISSN 1996-840X
versión impresa ISSN 0379-4350

S.Afr.j.chem. (Online) vol.64  Durban  2011

 

RESEARCH ARTICLE

 

[H2-cryptand 222]2+(Br3-)2 as a tribromide-type catalyst for the trimethylsilylation/tetrahydropyranylation of alcohols

 

 

Gholamabbas ChehardoliI, *; Mohammad Ali ZolfigolII; Vahid KhakyzadehII; Hadi GholamiKII; Khodabakhsh NiknamIII

ISchool of Pharmacy, Hamedan University of Medical Sciences, 65178 Hamedan, Iran
IIFaculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
IIIDepartment of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran

 

 


ABSTRACT

A stable organic tribromide, [H2-cryptand 222]2+(Br3-)2 was utilized as an active catalyst for the trimethylsilylation/ tetrahydropyranylation of alcohols. The method is general for the preparation of OH-protected aliphatic (acyclic and cyclic), aromatic, primary, secondary and tertiary alcohols.

Keywords: [H2-cryptand 222]2+(Br3-)2, trimethylsilylation, tetrahydropyranylation, alcohols, tribromide, TMS-ether, THP-ether


 

 

Full text available only in pdf format.

 

Acknowledgements

This paper was extracted from the M.Sc. thesis of Vahid Khakyzadeh. The authors acknowledge financial support for this work from the research affairs of Hamedan University of Medi-calSciences,Hamedan,I.R. Iranandpartialsupportofthis work by the Research Affairs Office of Bu-Ali Sina University (Grant number 32-1716 entitled development of chemical methods, reagent and molecules.),and also Center ofExcellence inDevelopment of Chemical Method (CEDCM) Hamedan, I.R. Iran.

 

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Received 16 May 2011
Revised 8 July 2011
Accepted 21 July 2011

 

 

* To who correspondence should be addressed. E-mail: chehardoli@umsha.ac.ir; cheh1002@gmail.com

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