Solvent-free synthesis of hydrazones and their subsequent N-alkylation in a Ball-mill
作者:Pierrick Nun、Charlotte Martin、Jean Martinez、Frédéric Lamaty
DOI:10.1016/j.tet.2011.07.056
日期:2011.10
A large variety of Boc-, Bz-, Ts-, and Fmoc- protected hydrazones were prepared via condensation of an equimolar amount of carbonyl-compound and the corresponding hydrazine using a ball-mill. Hydrazones were always obtained in a quantitative yield and no solvents were used at any step. In a second step, we realized the first solvent-free N-allylation and N-benzylation of these hydrazones. (C) 2011 Elsevier Ltd. All rights reserved.