An easy access to tetralin and indane skeletons has been developed using a diastereoselective intramolecular Friedel–Crafts alkylation. Treatment of diastereomeric mixtures of benzyl carbinols with a catalytic amount of Ca(NTf2)2/Bu4NPF6 yields the respective tetralin or indane in good yields with high levels of regio- and diastereoselectivity.
使用非对映选择性分子内Friedel-Crafts烷基化技术,可以轻松获得四氢化萘和茚满骨架。用催化量的Ca(NTf 2)2 / Bu 4 NPF 6处理苄基甲醇的非对映异构体混合物可得到各自的四氢化萘或茚满,收率高,具有较高的区域和非对映选择性。
Dumontet, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1952, vol. 234, p. 1173