Methyl iodide → HCID 18958860, compound

Participants

Reaction Steps

5 g of 7-n-propyl-5-methyl-2-mercapto-8-(4-nitrobenzyl)-1,2,4-triazolo[1,5-c]pyrimidine, prepared in Example 37, are dissolved in 50 ml of chloroform and 2.2 ml of triethylamine. 1.5 ml of methyl iodide are added and the mixture is stirred at room temperature for 2 hours and then left overnight. The mixture is then washed with dilute sodium hydroxide solution and the organic phase is separated after settling has taken place, dried over magnesium sulphate and evaporated under vacuum to give a residue which crystallise in an ether/pentane mixture to yield 4 g of 7-n-propyl-5-methyl-2-methylmercapto-8-(4-nitrobenzyl)-1,2,4triazolo[1,5-c]pyrimidine in the form of crystals of melting point 130° C.

Provenance & Evidence