The FeCl3-mediated cyclization of α,α′-disubstituted Z-alkenes 1 is reported as a general and non-photochemical route to synthesize benzo[1,2-b:4,3-b′]dithiophene (BDT) derivatives 2, achievable in good yields starting from cheap and easily available materials. The influence of the temperature and the nature of the substituents on the scope and limitations of this methodology is also reported.
据报道,FeCl 3介导的α,α'-二取代的Z-烯烃1的环化是合成苯并[1,2- b:4,3- b ']二
噻吩(BDT)衍
生物2的一般和非光
化学途径。可以从便宜且容易获得的材料开始以高收率实现。还报道了温度和取代基的性质对这种方法的范围和局限性的影响。