反应详情

N-n-butyl-bis-(2-hydroxypropyl)amine (60g, 0.32 mol) and trans-4-phenyl-3-buten-2-one (85g 10.58 mole) were subjected to a reaction as described in Example 1 above, except that the products stayed in the reaction flask and the reaction was held at 180° C. for 5 hours. A 51% yield of 3,4-dihydro-4-n-butyl-2,6-dimethyl-2H-1,4-oxazine was obtained.