Benzo[b]thiophene and its benzannulated derivatives are important classes of compounds due to their unique chemical properties and biosteric relationship with indole. In this letter, we report a convenient route for the synthesis of substituted naphtho[b]thiophenes through a ring transformation reaction of suitably functionalized 2H-pyran-2-ones with 6,7-dihydro-5H-benzothiophene-4-one, in good yields
苯并[ b ]
噻吩及其苯甲环化衍
生物由于其独特的
化学性质和与
吲哚的
生物立体关系而成为重要的化合物。在这封信中,我们报告了通过适当官能化的2 H-
吡喃-2-酮与6,7-二氢-5 H-
苯并噻吩-4-酮的环转化反应,合成取代的
萘并[ b ]
噻吩的简便方法,收益率很高。