| 摘要 |
1509845 Preparing N-substituted formamides E I DU PONT DE NEMOURS & CO 21 Sept 1976 [22 Sept 1975] 39075/76 Heading C2C An N-substituted formamide is made by reacting an N-substituted methylamine with molecular oxygen in a liquid homogeneous medium in the presence of a catalyst which is a chloride, bromide or iodide of Co, Cu, Au, Fe, Mn, Hg, Ni, Pd, Pt, Re, Ag or Zn. The N- substituted methylamine prepferably has the formula wherein R is alkyl of 1 to 8 carbons, aryl of 6 to 12 carbons, aralkyl of 7 to 11 carbons or alkaryl of 7 to 10 carbons; R<SP>1</SP> is aryl of 6 to 12 carbons, aralkyl of 7 to 11 carbons, alkaryl of 7 to 10 carbons, alkyl of 1 to 8 carbons or such alkyl containing an -N(CH 3 )R<SP>2</SP> group in which R<SP>2</SP> is hydrogen, alkyl of 1 to 8 carbons, aryl of 6 to 12 carbons, aralkyl of 7 to 11 carbons or alkaryl of 7 to 10 carbons; with the provisos that R and R<SP>1</SP> can be joined together to form an alkylene or azaalkylene group of 3 to 8 carbons; and when R is alkyl or aralkyl, R<SP>1</SP> can be hydrogen. The N-substituted formamide thus produced has the formula Most preferably dimethy formamide is made by oxidizing trimethylamine in the presence of a copper chloride and preformed dimethyl formamide. |
