Cyclohexyl 1-iodoethyl carbonate

Cyanophenyl)benzyl bromide Cyclohexyl 1-iodoethyl carbonate Stannous dichloride dihydrate... 

To a solution 2-ethoxy-l-[[2 -(N-triphenylmethyltetrazol-5-yl)biphenyl-4-yl]-methyl]benzimidazole-7-carboxylic acid (0.5 g) in DMF (5 ml) were added potassium carbonate (0.12 g) and cyclohexyl 1-iodoethyl carbonate (0.26 g). The mixture was stirred at room temperature for 1 hour. To the mixture was added water and the mixture was extracted with ethyl acetate. The organic layer was washed with water and dried. After removal of the solvent, the... 

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