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.
reactions, does not require strong electrophilicactivators, engages a broad range of C(sp3)‐, C(sp2)‐, and C(sp)‐nucleophiles, and seamlessly integrates with C−H and C−X magnesiation. Given the central character of sulfur compounds in organic chemistry, this protocol allows access to unrelated carbonyls, olefins, organometallics, halides, and boronic esters through a single strategy.
Palladium-Catalyzed SN1 Reactions of Secondary Benzylic Alcohols: Etherification, Amination, and Thioetherification
作者:Kimberly J. Miller、Mahdi M. Abu-Omar
DOI:10.1002/ejoc.200390185
日期:2003.3
The reaction of various secondarybenzylicalcohols in the presence of PdII catalysts provides ethers in good to high yields. Unsymmetric ethers could also be obtained with good selectivity by coupling two different alcohols. Direct amination is observed with electron-deficient anilines, and thioethers are prepared conveniently in high yields by the direct action of thiols on sec-phenylethyl alcohol