‘Zeofen’, a user-friendly oxidizing reagent

Ammonium chlorochromate adsorbed on alumina for cleavage of semicarbazones and phenylhydrazones under classical heating and microwave irradiation in solvent-free system

“…During the course of our investigation on organic manipulation in solvent free systems, 10,11 we have observed a relatively useful microwave effect. The salient features of this MW approach are improved reaction times and cleaner reactions.…”

“…In continuation of our investigations of organic reactions using supported reagents 10 and particularly under microwave irradiation in solvent-free system, 11 we now report a facile and selective oxidative cleavage of semicarbazones and phenylhydrazones using alumina supported ammonium chlorochromate under classical heating and microwave assisted conditions (Scheme 1).…”

Solvent-free oxidation of organic compounds with Fe(NO3)3.9H2O catalyzed by NaHSO4.H2O

“…In recent years, Fe(NO 3 ) 3 .9H 2 O, as a cheap, non-toxic and commercially available reagent has been used for the oxidation processes, either as supported on silica-gel and K10-clay [10], or mixed with HZSM-5 zeolite [11], tungstophosphoric acid [12], and molibdatop-hosphoric acid [13].…”

Heteropolyacides as green and reusable catalysts for the synthesis of [3,4-<i>b</i>][1,3,4] thiadiazines

“…Heteropolyacids are widely used in variety of acid catalyzed reactions [31][32][33][34][35][36][37][38]. As part of our current studies on the development of new routes in organic synthesis [39][40][41], we report an efficient one-pot synthesis of the [1,3,4][3,4-b]-thiadiazine derivatives, employing readily available starting materials.…”