Dimethylformamide → HCID 68428133, compound

Participants

Reaction Steps

12 ml of a (20%) solution of phosgene in toluene are added dropwise, at room temperature, to a mixture of 50 ml of toluene, 0.1 ml of N,N-dimethylformamide and 2.3 g of N-(4-methoxyphenyl)-N′-pivaloyl-hydrazine. The reaction mixture is stirred at reflux for 7 hours and then concentrated. After purification of the residue on silica gel, 1-methoxy-4-(5-oxo-2-tert-butyl-3,4-diaza-1-oxa-cyclopent-2-en-4-yl)-benzene is obtained in the form of a colourless oil.

Provenance & Evidence