CONVERSION OF OXIMES, PHENYLHYDRAZONES, 2,4-DINITROPHENYLHYDRAZONES, AND SEMICARBAZONES TO CORRESPONDING CARBONYL COMPOUNDS WITH BENZYLTRIPHENYLPHOSPHONIUM PEROXYMONOSULFATE (BnPh<sub>3</sub>P<sup>+</sup>HSO<sub>5</sub><sup>−</sup>) (BTPPMS) IN THE PRESENCE OF BISMUTH CHLORIDE UNDER NON-AQUEOUS CONDITIONS
作者:A. R. Hajipour、S. E. Mallakpour、I. M. Baltork、H. Adibi
DOI:10.1081/scc-100106197
日期:2001.1
novel reagent for the conversion of oximes, phenylhydrazones, 2,4-dinitrophenylhydrazones and semicarbazones to the corresponding carbonylcompounds. The reaction has been performed in acetonitrile under reflux conditions in the presence of a catalytic amount of bismuth chloride.
The synthetic utility of potassium dichromate in the presence of Lewis acids under solid phase conditions is described. This reagent efficiently oxidizes alcohols, acyloins, oximes and semicarbazones to their corresponding carbonyl compounds, while trimethylsilyl and tetrahydropyranylethers, ethylene acetals and ketals undergo oxidative deprotection to produce carbonyl compounds efficiently.
Silica Chloride/Wet SiO<sub>2</sub>as a Novel Heterogeneous System for Deprotection of Oximes, Hydrazones, and Semicarbazones
作者:F. Shirini、M. A. Zolfigol、M. Khaleghi、I. Mohammadpour-Baltork
DOI:10.1081/scc-120020193
日期:2003.6
Abstract Oximes, hydrazones, and semicarbazones can be converted to their corresponding carbonyl compounds in good to high yields by a combination of silica chloride and wet SiO2.
Solventless Rapid Synthesis of Oxime, Semicarbazone, and Phenylhydrazone Derivatives from Carbonyl Compounds under Microwave Conditions
作者:R. Kamakshi、Boreddy S. R. Reddy
DOI:10.1071/ch05107
日期:——
A rapid and efficient method for the synthesis of oximes, semicarbazones, and phenylhydrazones has been reported under solventless conditions using microwave irradiation.
Highly Selective Regeneration of Carbonyl Compounds from Their Oximes and Semicarbazones in Aqueous Medium
作者:Sanjay Bhar、Sharmistha Guha
DOI:10.1081/scc-200054761
日期:2005.5
Abstract Chemoselective regeneration of aryl alkyl ketone, α‐tetralone, and cycloalkanone by hydrolysis of their oximes and semicarbazones has been accomplished using aqueous phosphoric acid without involvement of any organic cosolvent in the reaction medium, where the similar derivatives of aryl aldehyde, diaryl ketone, aliphatic acyclic aldehyde and ketone remain mostly inert.