B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub> catalyzed direct nucleophilic substitution of benzylic alcohols: an effective method of constructing C–O, C–S and C–C bonds from benzylic alcohols
作者:Shan-Shui Meng、Qian Wang、Gong-Bin Huang、Li-Rong Lin、Jun-Ling Zhao、Albert S. C. Chan
DOI:10.1039/c8ra05811c
日期:——
An efficient and general method of nucleophilic substitution of benzylicalcohols catalyzed by non-metallic Lewis acid B(C6F5)3 was developed. The reaction could be carried out under mild conditions and more than 35 examples of ethers, thioethers and triarylmethanes were constructed in high yields. Some bioactive organic molecules were synthesized directly using the methods.
开发了一种由非金属路易斯酸B(C 6 F 5 ) 3催化的苯甲醇亲核取代的高效通用方法。该反应可以在温和的条件下进行,并且以高产率构建了超过 35 个醚、硫醚和三芳基甲烷的实例。使用该方法直接合成了一些生物活性有机分子。
Catalyst-free direct C(sp<sup>3</sup>)–H sulfenylation of xanthene derivatives using air as the oxidant
作者:Qian Chen、Guodian Yu、Xiaofeng Wang、Yingcong Ou、Yanping Huo
DOI:10.1039/c8gc03898h
日期:——
A catalyst-free direct C(sp3)–H sulfenylation has been achieved via the autoxidative cross-dehydrogenative coupling (CDC) between xanthene derivatives and thiophenols in ethanol using air as the sole oxidant at room temperature. This simple and efficient method provides straightforward access to 9-sulfenylated xanthenes, 9,10-dihydroacridines and thioxanthene with good functional group compatibility