Nuclear magnetic resonance studies of iminium salts. Part 11. Anionic participation of iminium salts in Phosgenation reactions
作者:Jean R. Gauvreau、Gerard J. Martin、Thierry Malfroot、Jean Pierre Senet
DOI:10.1039/p29840001971
日期:——
Iminiumsalts act as catalysts in the reaction of phosgene and phenols or thiols to yield chloroformates, which are important synthetic intermediates. This effect is explained in terms of the nucleophilicity of the chloride anion of the salts on the basis of an n.m.r. identification of various intermediates. The mechanism of nucleophilic assistance of iminiumsalts towards the substrate can be understood
<i>S,S</i>-Dialkyl Dithiocarbonates as a Convenient Source of Alkanethiolate Anions in Phase-Transfer-Catalysis Systems: An Improved Synthesis of Organic Sulfides
作者:Iacopo Degani、Rita Fochi、Valeria Regondi
DOI:10.1055/s-1983-30450
日期:——
Phase-Transfer Synthesis of Symmetrical<i>S</i>,<i>S</i>-Dialkyl Dithiocarbonates via<i>O</i>-Methyl<i>S</i>-Alkyl Dithiocarbonates
作者:lacopo Degani、Rita Fochi、Valeria Regondi
DOI:10.1055/s-1980-29024
日期:——
<i>S,S</i>-Dialkyl Dithiocarbonates as a Convenient Source of Alkanethiols: an Improved Synthesis of Alkylthiocarboxylic Acids