Palladium-Catalyzed Coupling of N-Heteroaryl Sulfides with Organozinc Reagents
摘要:
The palladium-catalyzed cross-coupling of N-heteroaryl sulfides with organozinc reagents was developed. Scope and limitation of the reaction regarding generality of zinc reagents and substrate were also investigated.
Syntheses of Aryl Thioethers <i>via</i> Aromatic Substitution of Aryl Halides at 0 to 25 °C
作者:Marina Tsuzaki、Shin Ando、Tadao Ishizuka
DOI:10.1248/cpb.c23-00232
日期:2023.7.1
In this study, we developed mild conditions for the synthesis of an aryl thioether via aromatic substitution using aryl halides, which is a process that has rarely been studied. Aromatic substrates such as arylfluoridesactivated with a halogen substituent are difficult to use for substitution reactions, but by using 18-crown-6-ether as an additive, these were successfully converted to their corresponding
A method for producing a polydiene, the method comprising the steps of (i) forming an active catalyst by combining a lanthanide-containing compound, an alkylating agent, and a halogen source in the substantial absence of an organosulfide; and (ii) polymerizing conjugated diene monomer in the presence of the active catalyst and an organosulfide.