Unusual reaction of triazole derivatives with 1-iodomethyl-1,1,3,3,3-pentamethyldisiloxane

The solvent-free reaction of 1-iodomethyl-1,1,3,3,3-pentamethyldisiloxane with 1,2,4-triazole derivatives and 1,2,3-benzotriazole afforded organylcyclosiloxane iodides and triiodides. The reactions involved alkylation of pyridine and pyrrole nitrogens and cleavage of the siloxane bonds mediated by hydrogen iodide generated upon the reaction.

     

Synthesis of Polyiodides of N- and S-S-Acetonyl Derivatives of 2,2′-(Disulfanediyl)- and 2,2′-[Alkanediylbis(sulfanyl)]-bisbenzimidazolium

Russian Journal of Organic Chemistry - 2,2′-(Disulfanediyl)- and 2,2′-[alkanediylbis(sulfanyl)]-bisbenzimidazoles react with aliphatic, aromatic, and heterocyclic α-iodoketones in...     

Synthesis of secondary silicon-containing acetylenic alcohols of the thiophene series

New silicon-containing acetylenic alcohols of the thiophene series have been obtained by the reaction of trialkylsilylacetylenylmagnesium bromides with 2-thiophenealdehydes. Their addition to butyl vinyl ether has given the corresponding acetals.     

Reaction of trimethyl (bromomagnesiumethynyl)silane with organyltrialkoxysilanes

Conclusions The reaction of trimethyl(bromomagnesiumethynyl)silane with organyltrialkoxysilanes gave a series of organyl(trimethylsilylethynyl)dialkoxysilanes.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2637–2640, November, 1985.     

Cyclogermasilethynes

A series of 12- and 18-membered macrocyclic germasilethynes, representatives on a new class of highly unsaturated macrocyclic heterohydrocarbons has been prepared by reactions of bromomagnesium derivatives of diethynyldiethylsilane, bis(ethynyldimethylsilyl)ethyne, and bis(ethynyldimethylsilylethynyl)dimethylsilane with dichloro(dimethyl)- and dichloro(diisopropyl)germanes.     

Reaction of ethynylsilanes with perfluoroiodoalkanes

Conclusion The addition of iodotrifluoromethane, 1-iodoperfluoropropane, and 1-iodo-1,1,2,2,3,3,4,4-octafluorobutane to alkylethynyl- and alkylalkoxyethynylsilanes gave the 1-iodo-3,3,3-trifluoropropen-1-ylsilanes, 1-iodo-3,3,3,4,5-5,5-heptafluoropenten-1-ylsilanes, and 1-iodo-3,3,4,4,5,5,6,6-octafluorohexen-1-ylsilane. The corresponding fluorosilanes were synthesized by reacting the latter with 40% aqueous HF solution.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1424–1428, June, 1982.