Conversion of Oximes into Carbonyl Compounds with Thalium(III) Nitrate Supported onto HZSM-5 Zeolite Under Microwave Irradiation in Solventless System

Abstract

Oximes are oxidatively deprotected by thalium(III) nitrate supported onto HZSM-5 zeolite to the parent carbonyl compounds in high yields upon exposure to microwave irradiation.

Update 1 of: Protection (and Deprotection) of Functional Groups in Organic Synthesis by Heterogeneous Catalysis

“…Y and ZSM-5, , zeolites, combined with potassium permanganate or iron and thallium nitrate, respectively, have been efficiently utilized in deoximation reactions of ketones; lower yields were observed with aldehydes, probably due to the overoxidation processes.…”

Tetrameric DABCO–Bromine Complex: A Novel Reagent for Regeneration of Carbonyl Compounds From Aldoximes and Ketoximes

“…Several methods for the regeneration of carbonyl compounds from their oximes such as clay-supported ammonium chlorochromate, [10] clyfen, [11] thallium(III) nitrate/HZSM5, [12] zeofen, [13] oxone/wet alumina, [14] bismuth nitrate/DABCO (1,4 -Diazobicyclof2,2,2goctane), [15] and clay-supported bistrimethysilyl chromate (BTSC) [16] have been reported by our group. Recently the problem of regeneration of aldehydes from oximes from available methods has been extensively reviewed.…”