Copper-Catalyzed Stereospecific C–S Coupling Reaction of Enantioenriched Tertiary Benzylic Amines via in Situ Activation with Methyl Triflate
作者:Wenlong Jiang、Nutao Li、Lihong Zhou、Qingle Zeng
DOI:10.1021/acscatal.8b03032
日期:2018.11.2
1-(thiophen-2-yl)ethanamine), and aminoacid esters containing a benzylamine moiety, are highly efficient substrates, and their chirality is efficiently transferred to the products (94–99% ee). The absolute configurations of the products are predictable and follow the pattern of SN2-type substitutions; an inversion of the absolute configuration of the tertiary amines occurs during the C–S coupling reaction. Not only
Brønsted Acid-Assisted Zinc-Catalyzed Markovnikov-Type Hydrothiolation of Alkenes Using Thiols
作者:Nobukazu Taniguchi
DOI:10.1021/acs.joc.0c00487
日期:2020.5.15
hydrothiolation of alkenes with thiols was achieved in the presence of 4-toluenesulfonic acid. Through this procedure, Markovnikov-type sulfides were synthesized in excellent yields, and the formation of anti-Markovnikov-type sulfides was suppressed. Furthermore, the combination of numerous aryl alkenes with arenethiols or alkyl thiols was achieved using the procedure.
nickel-catalyzed oxidative dehydrogenative coupling reaction of alkane with thiol for the construction of C(sp3)-S bond has been established, affording more than 50 alkyl thioethers. Notably, pharmaceutical and agrochemicals, such as Provigil, Chlorbenside and Pyridaben, were readily synthesized by this approach. The sterically hindered ligand BC and disulfide which was formed in situ oxidation of thiol, efficiently
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。