Envirocat reagent

MW-expedited dehydration reactions using montmorillonite K 10 clay [70] (Schs. 6.20 and 6.21) or Envirocat reagent, EPZG [71] (Schs. 6.20 and 6.21) have been demonstrated in a facile preparation of imines and enamines via the reactions of primary and secondary amines with aldehydes and ketones, respectively. The generation of polar transition state intermediates in such reactions and their enhanced... 

MW-promoted acceleration of such dehydration reactions using montmorillonite K 10 clay 40) or Envirocat reagent 41), EPZG (Scheme 7, 8) has been demonstrated in the preparation of imines and enamines. Microwaves at 2450 MHz... 

It years, there has been a considerable growth of interest in the catalysis of organic IS by inorganic reagents supported on high surface areas, Envirocat, a new family of supported reagents, which exhibits both Bronstead and Lev/is acid character, are ideal for environmentally friendly chemistry. These reagents are non-toxic powders that can be easily... 

Envirocats, 1990, Envirocats Supported Reagents, Contract Chemicals, Knowsely, Merseyside, UK. 

Contract Catalysts (UK), Envirocats Supported Reagents, Tech. Bull. (1991). 

Table 16.3 The Envirocat family of supported reagents, and their applications...

Beregszaszi and Molnar (1997) have reported that Envirocat supported reagents (EPZG, EPZIO, and EPIC) were efficient in catalyzing the acetylation of carbonyl compounds with 1,2-ethanediol under microwave irradiation in solvent-free conditions. It was also observed that the reagents could be used in repeated experiments to perform the reaction with the same activity. 

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