Structure Determination of 2,2-Diallyl-3-(3-methylureido)-1-propanol,an Unusual Product of Sodium Borohydride Reduction of Barbituric Acids

Sodium borohydride reduces the imide carbonyl groups of 5,5-diallyl-1-methyl-barbituric acid (1) at position 4 to a methylene group and at position 6 to a primary hydroxy group which has been verified by analysis of the high resolution ¹H-NMR and mass spectra of the product 3 .