Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... 2-Chloromethyl-3-nitroimidazo[1,2-a]pyridine is shown for the first time to react with 2-nitropropane salts by an S RN 1 mechanism to give excellent yield of isopropylidene derivative formed from the C-alkylation product by loss of nitrous acid. ... 2-Chloromethyl-3-nitroimidazo[1,2-a] ...