Cyanation of various alcohols by a new type of oxidation–reduction condensation is described. Primary alkyl diphenylphosphinites, 2,6-dimethyl-1,4-benzoquinone (DMBQ), and diethyl cyanophosphonate ...
Selective synthesis of isocyanides from secondary alcohols via alkyl diphenylphosphinites is established by a newtype of oxidation-reduction condensation in controlling the ambident reactivity of cyanide anion. In the presence of ZnO, isocyanides are obtained exclusively in moderate to high yields.
An Efficient Method for the Preparation of Monoalkylated Sulfonamides from Unsubstituted Sulfonamides and Alkyl Diphenylphosphinites by Oxidation–Reduction Condensation Using Trimethylsilylmethyl Azide
作者:Hidenori Aoki、Kiichi Kuroda、Teruaki Mukaiyama
DOI:10.1246/cl.2005.1266
日期:2005.9
An efficientmethod for monoalkylation of unsubstituted sulfonamides was established by usingalkyl diphenylphosphinites, sulfonamides and trimethylsilylmethyl azide and the monoalkylated sulfonami...
An Efficient Method for the Preparation of<i>N</i>-Alkylamides from Alkyl Diphenylphosphinites and Amides by Using Methyl Acrylate
作者:Hidenori Aoki、Teruaki Mukaiyama
DOI:10.1246/cl.2006.456
日期:2006.4
presence of easily available methyl acrylate under mild conditions. Yields obtained for the corresponding inverted sulfonamides were good to high in the cases when alkyl diphenylphosphinites derived from chiral secondary alcohols were used.
A convenient one-pot procedure for the preparation of various 2-thio-substituted benzothiazoles from alcohols and benzothiazole-2-thiol utilizing camphorquinone-mediated oxidation-reduction condensation is disclosed. The condensation between benzothiazole-2-thiol and alkyl diphenylphosphinites, generated in situ from alcohols and chlorodiphenylphosphine, proceeded smoothly in the presence of camphorquinone to furnish the corresponding benzothiazoles in good to moderate yields.[GRAPHICS].