A tandem denitration-deoxygenation of .alpha.-nitro ketones via (p-tolylsulfonyl)hydrazones with lithium aluminum hydride: a practical synthesis of (Z)-9-tricosene, the sex pheromone of the housefly (Musca domestica)
A one pot, solvent-free synthesis of acyclic α-nitro ketones through the nitroaldol reaction
作者:Roberto Ballini、Giovanna Bosica、Mauro Parrini
DOI:10.1016/s0040-4039(98)01730-4
日期:1998.10
Acyclic α-nitroketones are easily obtained in one pot, through a solvent-free procedure by nitroaldol (Henry) reaction on neutral alumina, then in situ oxidation of the nitroalkanol using wet alumina supported chromium(VI) oxide.
A novel reactivity of α-nitro ketone tosylhydrazones with DBU. Synthesis of α,β-unsaturated enone tosylhydrazones
作者:Roberto Ballini、Gianni Giantomassi
DOI:10.1016/0040-4020(95)00133-s
日期:1995.4
Treatment of α-nitro ketone tosylhydrazones with DBU gives 1,4-elimination of nitrous acid affording 1-tosylazoalkenes which, under basic conditions (DBU), tautomerize to the more stable enone tosylhydrazones. The obtained tosylhydrazones may be used as starting material for a wide range of other functionalities. Removal of the hydrazone affords conjugated enones in good yields. Due to the possibility