[EN] COMPOSITES, METHODS AND USES THEREOF<br/>[FR] COMPOSITES, PROCÉDÉS ET UTILISATIONS ASSOCIÉS
申请人:NAT UNIV SINGAPORE
公开号:WO2021107872A1
公开(公告)日:2021-06-03
The present invention relates, in general terms, to methods of catalysing a reaction, including the steps of contacting a chemical entity comprising a sulphide moiety with a composite and an oxidant. The composite acts as a heterogeneous catalyst to oxidise the sulphide moiety. The present invention also relates to composites, methods of synthesising the composites and its use as a catalyst thereof.
has been developed to access functionalized aryl nitriles. The ligand dcype (1,2-bis(dicyclohexylphosphino)ethane) in combination with the base KOAc (potassium acetate) is essential for achieving this transformation efficiently. This reaction involves both a C–Sbond activation and a C–Cbondformation. The scalability, low catalyst and reagents loadings, and high functional group tolerance have enabled
this report, the combination of masked inorganic sulfur and dimethyl carbonate was designed to achieve thiomethylated cross coupling of aryl chlorides. Remarkably, this powerful strategy realized thiomethylation of nucleosides bearing unprotected ribose, chloride-containing pharmaceuticals with late-stage coupling, and herbicides possessing multiple heteroatoms and steric hindrance. Moreover, this protocol
Efficient nucleophilic substitution reactions of quinolyl and isoquinolyl halides with nucleophiles under focused microwave irradiation
作者:Yie-Jia Cherng
DOI:10.1016/s0040-4020(01)01225-x
日期:2002.2
Nucleophilic substitutionreactions of 2-chloroquinoline, 3-bromoquinoline and 4-bromoisoquinoline with thiolate, alkoxy ions and aniline were completed within several minutes undermicrowaveirradiation. This method gives the desired products with yields up to 99% in a short reaction time, and is superior to the classical heating process.