Camphorquinone: a new and efficient oxidant for the preparation of 2-thio-substituted benzothiazoles from alcohols by oxidation-reduction condensation
摘要:
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].
Preparation of alkyl aryl sulfides from alcohols and arenethiols such as 2-sulfanyl-1,3-benzothiazole (BtzSH) is described by a new type of oxidation–reduction condensation using phenyl diphenylpho...
Preparation of Alkyl Aryl Sulfides from Alcohols and 2-Sulfanylbenzothiazole by a New Type of Oxidation–Reduction Condensation Using Aryl Diphenylphosphinite and Benzoquinone Derivatives
作者:Kiichi Kuroda、Yujiro Hayashi、Teruaki Mukaiyama
DOI:10.1246/cl.2008.592
日期:2008.6.5
A method for the preparation of alkylaryl sulfides from alcohols and 2-sulfanylbenzothiazole by a new type of oxidation–reduction condensation using phenyl diphenylphosphinite and 2,6-dimethoxy-1,...
A New Method for the Preparation of Alkyl Aryl Sulfides from Alcohols via Alkoxydiphenylphosphines by Oxidation–Reduction Condensation
作者:Teruaki Mukaiyama、Kazuhiro Ikegai
DOI:10.1246/cl.2004.1522
日期:2004.11
A new method for the preparation of alkyl aryl sulfides from alcohols via alkoxydiphenylphosphines by oxidation-reduction condensation was established. Various primary, secondary, and tertiary alcohols were successfully converted into the corresponding sulfides in moderate to high yields.
Stereospecific Synthesis of Alkyl Aryl Sulfides from Alcohols and 2-Sulfanylbenzothiazole Using Aryl Diphenylphosphinite and Azide Compounds by a New Type of Oxidation–Reduction Condensation
The preparation of alkylaryl sulfides from alcohols and 2-sulfanylbenzothiazole using phenyl diphenylphosphinite and azide compounds by a new type of oxidation–reduction condensation is described....
A New Type of Oxidation-Reduction Condensation by the Combined Use of Phenyl Diphenylphosphinite and Oxidant
作者:Teruaki Mukaiyama、Kiichi Kuroda、Yuji Maruyama
DOI:10.3987/rev-09-sr(s)1
日期:——
A new type of oxidation-reduction condensation of alcohols with sulfur, nitrogen, and oxygen nucleophiles by the combined use of phenyl diphenylphosphinite (PhOPPh2) and oxidants such as azides or diethyl azodicarboxylate (DEAD) are described. In these reactions, chiral secondary and tertiary alcohols are converted into the corresponding chiral sulfides, azides, esters and ethers under mild and neutral conditions with almost complete inversion of stereochemical configuration.