sub 20 n sub 2 o sub 3 264 3029 1 hexamethyleneimino ch sub 3 c sub 6 h sub 5 144 145 84 ch sub 2 et sub 2 o c sub 16 h sub 24 n sub 2 o sub 2 276 37__________________________________________________________________________ crude yield a solution of 15 2 grams of norephedrine in 200 ml of ch 2 cl 2 was cooled to 0 u00b0 5 u00b0 c to this 11 0 grams of triethylamine was added with stirring to the stirred mixture a solution of 14 9 grams of morpholine carbonyl chloride in 10 ml of ch 2 cl 2 was added dropwise the mixture was then stirred for 2 hours and left to stand at room temperature for 16 hours the mixture was washed with water and the organic layer was dried over anhydrous sodium sulfate the organic layer was then filtered and evaporated to a small volume the hydroxyethylurea n 1 methyl 2 phenyl 2 hydroxyethyl 4 morpholinecarboxamide was filtered off as a white solid and recrystallized from ch 2 cl 2 a solution of 10 6 grams of the hydroxyethylurea prepared in example 30 in 200 ml of ch 2 cl 2 was cooled to 0 u00b0 c thionyl chloride 5 36 grams dissolved in 20 ml of ch 2 cl 2 was added and the mixture was heated at reflux temperature for 30 minutes the mixture was left at room temperature for 64 hours the solvent was evaporated under vacuum to leave a yellow gum this material was dissolved in water concentrated k 2 co 3 solution was added to make the solution basic the 4 4 5 dihydro 4 methyl 5 phenyl 2 oxazolyl morpholine separated out as an oil.