Potassium Carbonate → 4,5-Diacetyl-[1,4,5]-oxadiazepine

Participants

Reaction Conditions

Reaction Steps

A mixture of 35 g of diacetylhydrazine (0.3 mol), 124.4 g or 165.8 g of ground potassium carbonate (0.9 or 1.2 mol, respectively), 85.8 g of 2,2-dichlorodiethyl ether (0.6 mol) and 560 ml of solvent (see Table 2) is heated to 125° C. and maintained at 125-130° C. or 80-90° C. (in the case of DMSO) for 5 hours. The mixture is then cooled to 20° C. and filtered, and the filtration residue is washed with the solvent. The yield is given by the content of title compound in the combined filtrate.

Provenance & Evidence