V. Cere et al., Indium-mediated allylation of the N,N-dimethyl glyoxal mono-hydrazone: One-pot synthesis of bis-homoallyl, and of homoallyl-alkyl 1,2-diols, SYNLETT, (10), 1999, pp. 1585-1587
Hydrazones behave as highly reactive species in the allylation under Barbie
r conditions. Nucleophilic addition of an alkyllithium to the carbonyl moie
ty of the glyoxal mono-hydrazone followed by indium-mediated allylation, le
ads in high yields to bisfunctionalized 1,2-diols in a one-pot two-step rea
ction.