5848-59-9Relevant articles and documents
Halogen Bond Catalyzed Bromocarbocyclization
Chan, Yuk-Cheung,Yeung, Ying-Yeung
, p. 3483 - 3487 (2018/02/28)
A halogen bond catalyzed bromo-carbocyclization of N-cinnamyl sulfonamides and O-cinnamyl phenyl ethers has been developed. N-methyl 4-iodopyridinium triflate is used as the halogen-bonding organocatalyst and the reaction is highly chemoselective. This report represents the first proof-of-concept for halogen-bonding organocatalyst-promoted electrophilic halogenation. Mechanistic study suggests the autocatalytic nature of this reaction.
Allylic activation across an Ir-Sn heterobimetallic catalyst: Nucleophilic substitution and disproportionation of allylic alcohol
Chatterjee, Paresh Nath,Roy, Sujit
, p. 3776 - 3785 (2012/07/14)
A nucleophilic substitution of allylic alcohols with carbon (arene, heteroarene, allyltrimethylsilane, and 1,3-dicarbonyl compound), sulfur (thiol), oxygen (alcohol), and nitrogen (sulfonamide) nucleophiles has been demonstrated using an in house developed [Ir(COD)(SnCl3)l(μ-Cl)]2 heterobimetallic catalyst in 1,2-dichloroethane to afford the corresponding allylic products in moderate to excellent yields. In 4-hydroxycoumarin, allylation occurs at the 3-position. The diaryl-substituted allylic alcohols undergo disproportionation in presence of the heterobimetallic catalyst to provide the corresponding alkenes and chalcones. An electrophilic mechanism is proposed from Hammett correlation study.
Die Reaktion von γ-substituierten N-Allyl-anilinen mit Schwefeldichlorid - eine Synthese von 2,3-Dihydro-1,4-benzothiazinen
Muehlstaedt, Manfred,Hollmann, Kerstin,Franke, Heike
, p. 282 - 283 (2007/10/02)
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