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...
Montmorillonite K 10-catalyzed regioselective addition of thiols and thiobenzoic acids onto olefins: an efficient synthesis of dithiocarboxylic esters
作者:Subbareddy Kanagasabapathy、Arumugam Sudalai、Brian C Benicewicz
DOI:10.1016/s0040-4039(01)00570-6
日期:2001.6
The addition of thiols and thiobenzoicacids onto olefins proceeded regioselectively in a Markovnikov manner in the presence of Montmorillonite K 10 (Mont K 10) clay as the catalyst to afford thioethers and thiocarboxylic S-esters, while high selectivity to anti-Markovnikov products was realized in the absence of any catalyst. Treatment of the esters with Lawesson's reagent provided the corresponding
在蒙脱石K 10(Mont K 10)粘土作为催化剂提供硫醚和硫代羧酸S酯的存在下,以马尔科夫尼科夫方式选择性地将硫醇和硫代苯甲酸加到烯烃上,同时实现了对反马尔科夫尼科夫产物的高选择性。在没有任何催化剂的情况下。用Lawesson试剂处理酯类,可以高收率得到相应的二硫代羧酸酯。
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.