No abstract

A novel cross-linked poly(vinylbenzyl chloride) anion exchange membrane is prepared using β-hydrogen free ‘hexamine’ as an amination agent.

The kinetics and mechanism of cyclization of the anionic sigma complex obtained from the reaction of 1,3,5-trinitrobenzene (TNB) and 1-benzyl-1-(ethoxycarbonyl)-2-propanone (BEP) in the presence of triethylamine (NEt 3 ) have been studied in CH 3 CN-CH 3 OH (50% v/v). The order of the reaction has been found to be zero in TNB and BEP, unity in NEt 3 , and negative and nonintegral in triethylammonium chloride. The rate has been observed to increase slightly