Cu-Catalyzed Coupling of Aryl Iodides with Thiols Using Carbonyl-Phosphine Oxide Ligands
作者:Haolong WANG、Boshun WAN
DOI:10.1016/s1872-2067(10)60243-4
日期:2011.1
A series of carbonyl-phosphine oxide ligands were synthesized from 2-bromophenylaldehyde and used in Cu-catalyzed C-S coupling reactions. Aryl iodide and aryl bromide reacted with thiols efficiently upon catalysis under mild reaction conditions and a yield of up to 99% was obtained.
Ullmann-type <i>N</i>-arylation of anilines with alkyl(aryl)sulfonium salts
作者:Ze-Yu Tian、Cheng-Pan Zhang
DOI:10.1039/c9cc06535k
日期:——
Ullmann-type N-arylation of anilines using alkyl(aryl)sulfonium triflates as arylation reagents has been accomplished. The reaction enabled Caryl–S bond cleavage over Calkyl–S bond breakage of alkyl(aryl)sulfoniums by Pd(P(tBu)3)2/CuI and gave the corresponding N-arylated products in good to high yields. It was also significant that the reactions of aniline with asymmetric butyl(mesityl)(aryl)sulfonium triflates
oxidant in the presence of catalytic quantity of silver nitrate. The method described has a wide range of application, does not involve cumbersome workup, exhibits chemoselectivity, and proceeds under mild reaction conditions, and the resulting products are obtained in good yields within a reasonable time. oxidation - sulfide - sulfoxide - silver nitrate - tert-butyl hydroperoxide
Reductive Cleavage of S–S Bond by Zn/AlCl<sub>3</sub> System: A Novel Method for the Synthesis of Sulfides from Alkyl Tosylates and Disulfides
作者:Barahman Movassagh、Amir Mossadegh
DOI:10.1081/scc-120039486
日期:2004.1.1
Abstract Alkyl and aryl disulfides are reduced by zinc powder in the presence of AlCl3 in aqueous media to yield zinc thiolates. These thiolate anion species then react with alkyl tosylates to give sulfides in high to excellent yields.
Sulfite-Promoted One-Pot Synthesis of Sulfides by Reaction of Aryl Disulfides with Alkyl Halides
作者:Ping Zhong、Ri-yuan Tang、Qiu-lian Lin
DOI:10.1055/s-2006-950363
日期:2007.1
dithionite, sodium thiosulfate and rongalite promoted one-pot synthesis of aryl alkylsulfides at room temperature has been developed. The reactions of a range of disulfides with alkyl halides proceeded smoothly in the presence of rongalite. Possible reaction pathways are discussed and the effects of these sulfites on disulfides are investigated. The important features of this protocol are metal-free, strong-base-free