Photoreduction des esters car☐yliques dans l'hexamethylphosphortriamide (HMPT)
作者:C. Portella、H. Deshayes、J.P. Pete、D. Scholler
DOI:10.1016/s0040-4020(01)88794-9
日期:1984.1
Use of HMPT as solvent in photochemistry allows efficient photoreductions. Alkyl esters and especially non absorbing alkyl acetates are photoreduced in excellent yields into alkanes. In the latter case, a protonating agent is necessary. Numerous examples illustrate the generality and convenience of the reaction. This photoreduction involves an electron transfer from HMPT to ester.
Reduction of alkyl esters to alkanes by sodium in hexamethylphosphoric triamide. A new method for the deoxygenation of alcohols
作者:Henri Deshayes、Jean-Pierre Pete
DOI:10.1039/c39780000567
日期:——
Esters of primary, secondary, or tertiary alcohols are reduced by sodium in hexamethylphosphorictriamide containing t-butyl alcohol to provide predominantly the corresponding alkanes and alcohols.
The chemistry of triterpenes and related compounds. Part XLV. The acid-catalysed rearrangements of the 5α,6α-diols and 5,6-epoxides of some 4,4-dimethylsteroids
作者:T. G. Halsall、Ewart R. H. Jones、E. L. Tan、G. R. Chaudhry
DOI:10.1039/j39660001374
日期:——
A number of 5,6-diols and -epoxides in the 4,4-dimethyl-chlolestane and -androstane series have been prepared and their reactions under acidic conditions studied. Different products are obtained from the diols and the epoxides and, as expected, the type of oxygen function at C-3 influences the nature of the products formed.