102020-26-8Relevant articles and documents
Air-Tolerant Direct Thiol Esterification with Carboxylic Acids Using Hydrosilane via Simple Inorganic Base Catalysis
Xuan, Maojie,Lu, Chunlei,Liu, Meina,Lin, Bo-Lin
, p. 7694 - 7701 (2019/06/27)
Direct thioesterification of carboxylic acids with thiols using nontoxic activation agents is highly desirable. Herein, an efficient and practical protocol using safe and inexpensive industrial waste polymethylhydrosiloxane as the activation agent and K3PO4 with 18-crown-6 as a catalyst is described. Various functional groups on carboxylic acid and thiol substituents can be tolerated by the present system to afford thioesters in yields of 19-100%.
Rhodium-catalyzed interconversion between acid fluorides and thioesters controlled using heteroatom acceptors
Arisawa, Mieko,Yamada, Toru,Yamaguchi, Masahiko
supporting information; experimental part, p. 6090 - 6092 (2011/01/04)
A rhodium complex catalyzed the equilibrium acyl transfer reaction between acid fluorides and thioesters. In the presence of fluoride or thiolate acceptors, the reaction could be shifted to either product. RhH(PPh 3)4-dppe catalyzed the reaction of acid fluorides and diorgano disulfides in the presence of triphenylphosphine giving thioesters, which was accompanied by triphenylphosphine difluoride. The same complex catalyzed the reaction of aryl thioesters and hexafluorobenzene giving acid fluorides, which was accompanied by 1,4-di(arylthio)-2,3,5,6- tetrafluorobenzenes.
