Nickel-Catalyzed Negishi-Type Arylation of Trialkylsulfonium Salts
作者:Hideki Yorimitsu、Hiroko Minami、Keisuke Nogi
DOI:10.1055/s-0040-1707817
日期:2021.9
Negishi-type arylation of trialkylsulfonium salts with arylzinc reagents has been accomplished under nickel catalysis. The use of cyclohexanethiol as an additional ligand was found to be particularly important to promote C–S cleavage. The present reaction accommodates one-pot arylation of dialkylsulfides by combining with S-methylation with MeOTf. Mechanistic experiments suggest that C–S cleavage
Alkoxo- and aryloxo-gold(I) complexes [Au(OR)L] [R = CH(CF3)2, L = PPh3 1a or PCy3 1b; R = Ph, L = PPh3 1c, PCy3 1d or PMe3 1e] smoothly reacted with ethylene sulfide to give the corresponding 2-(alkoxy- or -aryloxy)ethylsulfanylgold(I) complexes [Au(SCH2CH2OR)L] 2 at room temperature. Similar treatments of 1a–1e with propylene sulfide, isobutylene sulfide, or styrene sulfide selectively cleaved the
Elimination and addition reactions. Part XIX. Elimination of phenoxide from β-substituted ethyl phenyl ethers: the nature of activation in 1,2-elimination
作者:J. Crosby、C. J. M. Stirling
DOI:10.1039/j29700000671
日期:——
In an investigation of the nature of activation in eliminationreactions, rates of elimination of phenoxide under basic conditions from a series of 17 phenylethers of the type X–CH2·CH2·OPh have been measured.
Behaviour of iprit carbonate analogues in solventless reactions
作者:F. Arico'、S. Evaristo、P. Tundo
DOI:10.1039/c4ra03254c
日期:——
Sulfur iprit carbonate analogues showed to undergo nucleophilic substitution with several substrates in neat conditions at atmospheric pressure, in the presence and in the absence of a catalytic amount of base.
Sulphonium compounds and herbicidal compositions containing them
申请人:FBC LIMITED
公开号:EP0050440A1
公开(公告)日:1982-04-28
A herbicidal composition comprising a compound of formula I
where Ph is phenyl and X- is an equivalent of an anion in admixture with an agronomically acceptable diluent or carrier. The compounds are particularly active against yellow and purple nutsedges.
一种除草组合物,包括式 I 的化合物
其中 Ph 是苯基,X- 是等效的阴离子,与农艺上可接受的稀释剂或载体混合。该化合物对黄色和紫色坚果草特别有效。