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Issue 6, 2015
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A mesoporous organosilica grafted Pd catalyst (MOG-Pd) for efficient base free and phosphine free synthesis of tertiary butyl esters via tertiary-butoxycarbonylation of boronic acid derivatives without using carbon monoxide

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Abstract

A mesoporous organosilica grafted palladium(II) catalyst was synthesized and characterized using various spectroscopic techniques. Its catalytic activity was evaluated for the synthesis of tertiary butyl esters via tert-butoxycarbonylation of boronic acid derivatives. The tertiary butyl esters were obtained directly from boronic acid pinacol esters and di-tert-butyl dicarbonate. The reaction was optimized by varying the bases, temperatures and solvents. The catalyst was very stable and could be facilely recovered and reused six times with no significant decrease in its activity and selectivity.

Graphical abstract: A mesoporous organosilica grafted Pd catalyst (MOG-Pd) for efficient base free and phosphine free synthesis of tertiary butyl esters via tertiary-butoxycarbonylation of boronic acid derivatives without using carbon monoxide

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Article information


Submitted
15 Dec 2014
Accepted
22 Apr 2015
First published
24 Apr 2015

Green Chem., 2015,17, 3540-3551
Article type
Paper

A mesoporous organosilica grafted Pd catalyst (MOG-Pd) for efficient base free and phosphine free synthesis of tertiary butyl esters via tertiary-butoxycarbonylation of boronic acid derivatives without using carbon monoxide

K. Ghosh, R. A. Molla, Md. A. Iqubal and S. M. Islam, Green Chem., 2015, 17, 3540
DOI: 10.1039/C4GC02443E

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