Visible-light-driven reversible shuttle vicinal dihalogenation using ...
WEBAug 4, 2023 · To realize the efficient hetero-dihalogenation shuttle, a series of metal-doped CsPbBr 3 QDs are prepared to execute photocatalytic performance at 25 °C in a reaction vial with styrene as the...
Dihalogenation of Alkenes Using Combinations of
WEBSep 6, 2021 · We started our investigation by attempting the iodochlorination of styrene 1 a (Table 1). In an initial experiment, the alkene (0.5 mmol) was mixed with N -iodosuccinimide (1.5 equiv) and lithium chloride (2 equiv) in …
Visible-light-driven reversible shuttle vicinal dihalogenation using ...
WEBAug 4, 2023 · To realize the efficient hetero-dihalogenation shuttle, a series of metal-doped CsPbBr 3 QDs are prepared to execute photocatalytic performance at 25 °C in a reaction vial with styrene as the halogen atom receptor, DBE and TCE as the halogen sources (Fig. 5b and Supplementary Table 13).
Photochemical diazidation of alkenes enabled by ligand-to
WEBDec 23, 2022 · Importantly, recent endeavors by Bao and coworkers have showcased the thermal, enantioselective diazidation of styrene-type alkenes using perester oxidants, providing a valuable tool for...
WEBSep 6, 2021 · In summary, we have developed a simple method for the vicinal dihalogenation of alkenes. The procedure consists on the treatment of the alkene with a N-halosuccinimide and an alkali metal halide in the presence of acetic acid and using ethyl acetate as an environmentally benign solvent.
Catalytic hydrogen atom transfer from hydrosilanes to ... - Nature
WEBJan 28, 2019 · Hydrogen atom transfer (HAT)—a concerted migration of a proton and electron from a donor to an acceptor molecule in a single kinetic step—is ubiquitous and one of the most fundamental chemical ...
Merging shuttle reactions and paired electrolysis for reversible ...
WEBJan 29, 2021 · Here, we introduce an electrochemically assisted shuttle (e-shuttle) paradigm for the facile and scalable interconversion of alkenes and vicinal dihalides, a class of reactions that can be used both to synthesize useful dihalogenated molecules from simple alkenes and to recycle waste material through retro-dihalogenation. The reaction is ...
Simple and practical halogenation of arenes, alkenes and …
WEBSep 3, 1999 · The reaction of styrene with H202/HBr system in methanol as solvent revealed interesting results. Careful analysis of the reaction products suggested the formation of 1-bromo-l-phenyl-2-methoxy ethane along with vicinal dibromo product.
(PDF) Dihalogenation of Alkenes Using Combinations of N ...
WEBSep 6, 2021 · A simple, efficient and eco‐friendly method for the vicinal dihalogenation of alkenes is described. The reaction is performed with a combination of a N‐halosuccinimide and an alkali metal ...
9.2: Preparation of Alkynes - Elimination Reactions of Dihalides
WEBMar 25, 2024 · The process begins with the electrophilic addition of a halogen to the alkene bond to form the dihaloalkane. Then the double E2 elimination process is used to form the 2 π π bonds of an alkyne. This first process is gone over in much greater detail in the page on halogenation of an alkene.
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