35021-68-2Relevant articles and documents
High Catalytic Activities of Pseudoliquid Phase of Dodecatungstophosphoric Acid for Reactions of Polar Molecules
Nishimura, Toru,Okuhara, Toshio,Misono, Makoto
, p. 1695 - 1698 (1991)
A solid H3PW12O40 exhibited very high catalytic activities for the reations of polar molecules in the liqiud phase, while it was much less active for the reactions of nonpolar molecules.It was confirmed that the pseudoliquid phase behavior of H3PW12O40 is responsible for the high activities.
Base-Mediated O-Arylation of Alcohols and Phenols by Triarylsulfonium Triflates
Ming, Xiao-Xia,Tian, Ze-Yu,Zhang, Cheng-Pan
supporting information, p. 3370 - 3379 (2019/11/03)
A mild and efficient protocol for O-arylation of alcohols and phenols (ROH) by triarylsulfonium triflates was developed under transition-metal-free conditions. Various alcohols, including primary, secondary and tertiary, and phenols bearing either electron-donating or electron-withdrawing groups on the aryl rings were smoothly converted to form the corresponding aromatic ethers in moderate to excellent yields. The reactions were conducted at 50 or 80 °C for 24 h in the presence of a certain base and showed good functional group tolerance. The base-mediated arylation with asymmetric triarylsulfonium salts could selectively transfer the aryl groups of sulfoniums to ROH, depending on their inherent electronic nature. The mechanistic studies revealed that the reaction might proceed through the nucleophilic attack of the in situ formed alkoxy or phenoxy anions at the aromatic carbon atoms of the C?S bonds of triarylsulfonium cations to furnish the target products.
A new procedure for the synthesis of 2-[(4-dodecyloxyphenyl)sulfonyl]butanoic acid
Shi, Yun-Long,Wang, Ling,Qian, Chao,Tao, Ming,Liao, Zu-Tai,Chen, Xin-Zhi
, p. 1237 - 1243 (2015/06/23)
A new, practical and cost-effective route for scalable synthesis of 2-[(4-dodecyloxyphenyl)sulfonyl] butanoic acid, a key intermediate of a new cyan dye-forming coupler containing a sulfone group, was developed by adopting phenol as the starting material. The synthesis was accomplished in five steps with etherification, chlorosulfonation, reduction, nucleophilic reaction by C-S coupling and hydrolyzation. An important objective of the new synthetic route was the synthesis of 2-[4-(dodecyloxyphenyl)sulfonyl]butanoate. Overall yield obtained at optimized conditions increased to 66 %. The synthetic strategy was proven to be a process enabling rapid delivery of the target product with high purity.
