Reductive cyclization of polychloroalkanes involving two dichloromethylene groups

Conclusions The reductive cyclization of CH₃CCl₂CH₂CCl₂CH₃ proceeds as 1,3-dechlorination to give 1,2-dichloro-1,2-dimethyl- and 1-chloro-1,2-dimethylcyclopropanes. It was postulated that the formation of the esters CH₂=C(CH₃)CH(CH₃)OC₂H₅ and CH₃CH=C(CH₃)CH₂OC₂H₅ as the main reaction products is due to isomerization with opening of the chloro-substituted cyclopropane ring and subsequent solvolysis of the isomerization product.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1854–1856, August. 1980.     

UV photolysis of protonated ruthenium and osmium decamethylmetallocenes as a new method for synthesis of the metallonium cations

Decamethylmetallocenes Cp^* ₂M (M=Ru, Os) in the presence, of acids (CF₃CO₂H, CF₃SO₃H) give thepprotonation products [Cp^* ₂MH]⁺An⁻. Broad-band UV photolysis of their solutions results in the formation of the salts of onium cations . A preparative procedure for the synthesis of these salts has been developed. Hydrolysis of the salts gives the carbinol Cp^*MC₅Me₄CH₂OH. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 587–591. March, 1999.