Boron carbide as an effective friedel-crafts type catalyst

Details Boron carbide as an effective friedel-crafts type catalyst Boron carbide as an effective friedel-crafts type catalyst

2008-07-01

2008-07-01

Parsa, Jafar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S106000

Reexamination Certificate

active

11897507

ABSTRACT:
The compound boron carbide, B4C, is an effective catalyst for the synthesis of aromatic esters by reacting benzoyl halides with phenols in the presence of powdered B4C.

REFERENCES:
patent: 4414406 (1983-11-01), Fielas
patent: 4547605 (1985-10-01), Kresge
patent: 4717780 (1988-01-01), Olson
patent: 5750455 (1998-05-01), Chauvin
patent: 6184418 (2001-02-01), Dubac
Tamaddon et al□□A green protocol for chemoselective O-acylation in the presence of zinc oxide as a heterogeneous, reusable and eco-friendly catalyst □□Tetrahedron Letters □□vol. 46, Issue 45, Nov. 7, 2005, pp. 7841-7844 □□.

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