The reactions of hydrazines with alpha-lactams. Regiochemistry of hydrazine addition and subsequent ring closure to N-aminohydantoins or 1,2,4-triazine-3,6-diones
Rv. Hoffman et al., The reactions of hydrazines with alpha-lactams. Regiochemistry of hydrazine addition and subsequent ring closure to N-aminohydantoins or 1,2,4-triazine-3,6-diones, J ORG CHEM, 63(24), 1998, pp. 9128-9130