Nucleophilic Addition Reactions to the Ethylnitrilium Derivative of nidoCarborane 10-EtC≡N-7,8-C2B9H11статья
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Дата последнего поиска статьи во внешних источниках: 4 января 2019 г.
Аннотация:Alkylnitrilium derivatives of nido-carborane 10-RC≡N-7,8-C2B9H11 (R = Me, Et) have been prepared by reaction of the parent anion [7,8-C2B9H12]- with mercury(II) chloride in mixtures of the corresponding nitriles and benzene. Hydrolysis of 10-EtC≡N-7,8-C2B9H11 resulted in iminol 10-EtC(OH)=HN-7,8-C2B9H11 which on treatment with base gave the corresponding amide 10-EtC(=O)HN-7,8-C2B9H11. The reactions of 10-EtC≡N-7,8-C2B9H11 with alcohols and thiols were found to give stable imidates and thioimidates 10-EtC(XR)=HN7,8-C2B9H11 (X=O, R=Me, Et, iPr, Bu; X=S, R=Et, Bu, Hx) as mixtures of E- and Z-isomers that were successfully separated by column chromatography. The crystal molecular structures of E-10-EtC(OR)=HN-7,8-C2B9H11 (R = Et, i-Pr, Bu) and Z-10-EtC(SEt)=HN-7,8-C2B9H11 were determined by single crystal X-ray diffraction study.