反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To a solution of 2-sec butylphenol (1.5 g, 0.01 mole) and ethyl N-methylcarbamate (1.03 g, 0.01 mole) in ethylene dichloride (6 ml) was added phosphoryl chloride (0.77 g, 0.05 mole) and the reaction mixture was refluxed under stirring for twenty hours. It was poured onto ice-cold water. The organic layer separated and aqueous layer was extracted with dichloroethane. The combined organic layer was washed with water, dried (Na2SO4) and distilled to give liquid residue, which was further purified by distillation to give 2-sec butyl N-methylcarbamate of the formula (III) [96% by GLC, DV-101 (3%), 150° C., nitrogen, 30 ml/min.] as a liquid, b.p. 110° C. (vap.)/4 mm; IR: 3320 (N--H), 1730 (--COO--), 1535,1490 and 750 (aromatic); PMR (CDCl3, 90 MHz): 0.81 (3H,t, primary methyl of side chain, 1.58 (2H, m, methylene protons of side chain), 2.88 (4H, doublet overlapping a multiplet, NH--CH3 and benzylic proton), 4.97 (1H, br s, N--H) and 6.95 to 7.25 (4H, m, aromatic).
the reaction mixture was refluxed
It was poured onto ice-cold water
The organic layer separated
aqueous layer was extracted with dichloroethane
The combined organic layer was washed with water
dried (Na2SO4)
distilled
to give liquid residue, which
was further purified by distillation
来源 ID: ord-9880c9027cf94417a87cd63528fcf8be