Efficient Synthesis of Enynecarbamates and Their Ring-Closing Metathesis/[4 + 2] Diels−Alder Cycloaddition: Synthesis of Hexahydroisoquinolines
作者:Alan R. Katritzky、Satheesh K. Nair、Tatyana Khokhlova、Novruz G. Akhmedov
DOI:10.1021/jo0340408
日期:2003.7.1
Enynes 5a-g were prepared in moderate to good yields from 1-(triphenylphosphoranylideneaminoalkyl)benzotriazoles. Ring-closing metathesis of 5a-f afforded functionalized dienes 6a-f, respectively, which were used in a Diels-Alder cycloaddition reaction in the synthesis of the corresponding hexahydroisoquinoline derivatives 7a-f.
从1-(三苯基膦基亚烷基氨基烷基)苯并三唑以中等到良好的产率制备烯炔5a-g。5a-f的闭环复分解分别提供官能化的二烯6a-f,将其用于Diels-Alder环加成反应中,以合成相应的六氢异喹啉衍生物7a-f。