A new approach to incorporate the carboranyl fragment into 2,5-diazabicyclo[2.2.2]oct-2-enes
摘要:
5-(Het)aryl-2,3-dicyano-1-ethylpyrazinium salts have been established to react with 9-allyl-ortho- and 9-allyl-meta-carboranes in the presence of sodium iodide into carboranylmethyl derivatives of 2,5-diazabicyclo[2.2.2]oct-2-ene.
Reactions of Radicals Generated from 1-Ethyl-1,4-diazinium-salts: Addition to the C-C Triple Bond versus Dimerization
作者:Gennadiy L. Rusinov、Egor V. Verbitskiy、Pavel A. Slepukhin、Olga N. Zabelina、Mikhail I. Kodess、Marina A. Ezhikova、Valeriy N. Charushin、Oleg N. Chupakhin
DOI:10.3987/com-09-11734
日期:——
Radical species generated from 5-aryl-substituted 1-ethyl-2,3-dicyano-1,4-diazinium salts by action of sodium iodide undergo dimerization into [2,2']bipyrazinyl derivatives, as evidenced by NMR and X-ray crystallography data. The pyrazinyl radicals can also be involved into the addition reaction on the C-C triple bond, thus demonstrating a new synthetic route to modify the structure of pyrazines. The structures of E- and Z-isomers of 1-(1',2'-dihydropyrazinyl-2')-2-iodoethenes have been proved by H-1 and C-13 NMR spectroscopy and X-ray analysis.
A new approach to incorporate the carboranyl fragment into 2,5-diazabicyclo[2.2.2]oct-2-enes
作者:Gennady L. Rusinov、Egor V. Verbitsky、Pavel A. Slepukhin、Olga N. Zabelina、Il’ya N. Ganebnykh、Valery N. Kalinin、Valentina A. Ol'shevskaya、Valery N. Charushin
DOI:10.1016/j.mencom.2009.09.002
日期:2009.9
5-(Het)aryl-2,3-dicyano-1-ethylpyrazinium salts have been established to react with 9-allyl-ortho- and 9-allyl-meta-carboranes in the presence of sodium iodide into carboranylmethyl derivatives of 2,5-diazabicyclo[2.2.2]oct-2-ene.