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© 2017. This work is published under http://creativecommons.org/licenses/by-nc-sa/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Bismuth trichloride as mild reagent, has been found to be a worthful catalyst for tetrahydropyranylation of 1º, 2 º, 3º, allylic, benzylic alcohols, and symmetric di-ols. At room temperature the reagent THP(3,4–dihydro-2H-pyran) was successfully employed as pyranylating agent in presence of BiCl3 catalyst without the use of a solvent and the yields of the products were found to be 90-96%. Further, the depyranylation of alcohols was achieved in quantitative yield by simple addition of MeOH using the same catalyst. The developed method was showed good chemo-selectivity in symmetrical diols for mono THP protection.

Details

Title
Bicl3: A Versatile Catalyst for the Tetrahydropyranylation and Depyranylation of 1°,2°,3°,Allylic,Benzylic Alcohols, and Symmetric Diols
Author
T Vijaya Durga; K Bala Murali Krishna; M Baby ramana; M Shantha Kumari; Vijay, K; Babu, B Hari
Pages
1030-1034
Publication year
2017
Publication date
2017
Publisher
Oriental Scientific Publishing Company
ISSN
0970020X
e-ISSN
22315039
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2117202019
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by-nc-sa/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.