The first example of benzylic C—H triflylation was accomplished with pyridine as a directing group. The reaction of various 2‐benzylpyridines and (CF3SO2)2O in the presence of NEt3 in CH2Cl2 proceeded smoothly to afford the corresponding benzyl triflones in moderate to high yields.
用吡啶作为指导基团完成苄基CHF3-三氟甲基化的第一个实例。在NEt 3存在下,各种2-苄基吡啶和(CF 3 SO 2)2 O在CH 2 Cl 2中的反应顺利进行,以中等至高收率提供了相应的苄基三氟甲酮。
Chemistry of the Benzylpyridines. II. Nuclear Substituted 2-Benzylpyridines<sup>1</sup>
作者:Nathan Sperber、Domenick Papa、Erwin Schwenk、Margaret Sherlock