S-tosylsulfenamides,new electrophilic sulfosulfenylating agents

A method has been developed for the synthesis of thiosulfonates by the electrophilic addition of S-tosylsulfenamides to olefins or their electrophilic substitution in aromatic systems. SO₃, Py·SO₃, and BF₃·Et₂O were used as activators. The addition of S-tosylsulfenamides to olefins proceeds through electrophilic trans addition.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2623–2629, November, 1991.     

International Markovnikov Congress on Organic Chemistry (MC-150)

Russian Chemical Bulletin -     

Electrochemical study of redox properties of 2,3,4,5-tetraphenyl-1-heterocyclopenta-2,4-dienes Ph4C4ER1R2 (E = Si,Ge, Sn). A new method for generation of tetraphenylgermole dianion

The electrochemical behavior of the sila-, germa-, and stannacyclopentadienes (metalloles) was studied by cyclic voltammetry. The oxidation and reduction mechanisms of these heterocyclic compounds were investigated. A new method for generation of tetraphenylgermole dianion involving the electrochemical reduction of the corresponding dichlorogermole is proposed. Electrochemical oxidation of the metallole dianions was first studied taking tetraphenylgermole dianion as an example.     

N. D. Zelinskii: To the 160th Anniversary of Birth

Russian Journal of Organic Chemistry - February 2021 marked the 160th anniversary of the birth of N.D. Zelinskii, who worked for more than 50 years at Moscow University and headed a large school of...     

Adsorption of 2-(pyridin-2-yl)benzothiazoles with terminal thioacetate groups on the gold surface and their complexation with copper(ii) chloride

Russian Chemical Bulletin - A method for the preparation of new organic ligands combining in their structure a 2-(pyridin-2-yl)benzothiazole moiety capable of coordinating metal iones and a...     

Halosulfenylation of Conjugated Dienes with Arylsulfenamides in the Presence of Phosphorus Oxyhalides

Electrophilic sulfenylation of cyclic and open-chain conjugated dienes effected by a system arylsulfenamide-phosphorus oxyhalide was investigated. The initially formed adducts of 1,2-halosulfenylation in the course of the reaction and also at storage and chromatograqphic purification on silica gel undergo quantitative isomerization into a mixture of stereoisomeric products of 1,4-addition. The effect of halogen nature and the character of substituents in the benzene ring of arenesulfenamide on the addition rate of sulfenamides activated by phosphorus oxyhalides to open-chain and cyclic conjugated dienes and isomerization rate of the arising 1,2-adducts was examined.     

First example of [3+2] cycloaddition of azomethine ylides to 5-methylidene-3-phenylhydantoin

Russian Chemical Bulletin - New type dispiroindolinones, dispiroimidazolidine-4,3′-pyrrolidine-2′,3″-indolinones unsubstituted at position 4′ of the central pyrrolidine...     

Synthesis and antiviral activity of novel 3-substituted pyrazolinium salts

Chemistry of Heterocyclic Compounds - For the first time, convenient methods for the preparation of pyrazoline N-alkylidene salts based on terpene (camphor, camphorquinone, carvone) ketones, cage...