Synthesis of heterocycles. Construction of the 1-azabicyclo[2.2.1]heptyl system by sequential ring-closure of acyclic β-ammonio substituted radicals
作者:Ernest W Della、Andrew M Knill
DOI:10.1016/0040-4039(96)01231-2
日期:1996.8
Treatment of an irradiated solution of 1-methyl-1-(2-propynyl)-1-bis(2-phenylselenylethyl)ammonium iodide in tert-amyl alcohol with tributyltin hydride is found to be an effective procedure for the synthesis of 1,4-dimethyl-1-azoniabicyclo-[2.2.1]heptane iodide. Attachment of a trimethylsilyl or phenyl substituent to the terminal carbon of the triple bond in the alkynyl salt leads to bridgehead-substituted
发现用氢化三丁基锡处理1-甲基-1-(2-丙炔基)-1-双(2-苯基硒基乙基)碘化铵在叔戊醇中的辐照溶液是合成1,4的有效方法-二甲基-1-氮杂双环-[2.2.1]庚烷碘化物。将三甲基甲硅烷基或苯基取代基连接至炔基盐中三键的末端碳上会导致桥头取代的双环杂环盐。