Modular and practical diamination of allenes
Web3 apr. 2024 · The diamination reaction exclusively occurs at the terminal C–C double bond of the 1,3-dienes to give 4-vinylimidazolidin-2-ones in high yields and with excellent … Web31 jul. 2024 · California Institute of Technology Structure and Stereoisomerism The 1,2-dienes, which have cumulated double bonds, commonly are called allenes. The simplest …
Modular and practical diamination of allenes
Did you know?
Web30 mrt. 2024 · Herein, we report a modular and practical diamination of allenes, which offers efficient syntheses of β,γ-diamino carboxylates and sulfones. This reaction … Web15 aug. 2024 · Hydroamination is a reaction that involves the addition of a hydrogen and an amino group across an unsaturated C-C bond, such as that in alkenes or in alkynes. It is …
WebModular and practical diamination of allenes pp. 1-10 Jian-Jun Dai, Xianglin Yin, Lei Li, Mario E. Rivera, Ye-Cheng Wang and Mingji Dai The built-in electric field across … WebIt is shown that a metal-free amphoteric diamination of allenes produces valuable six-, seven- and eight-membered N-heterocycles with high diversity and tolerance of functional groups on the ring. Saturated 1,4-diazo heterocycles including piperazines, 1,4-diazepanes, and 1,4-diazocanes, are highly important for therapeutic development, but their …
Web30 mrt. 2024 · Modular and practical diamination of allenes Authors: Jian-Jun Dai Xianglin Yin Mario E. Rivera Show all 6 authors Abstract and Figures Vicinal diamines … WebAn electrochemical metal-free 1, 2- diamination of aryl alkenes with sulfamides to 1,2-diamines with excellent diastereoselectivity is reported, which obviates the use of any transition metal catalyst and oxidizing reagent and ensures broad reaction compatibility with a variety of electronically and sterically diverse substrates. 60 PDF
Web31 mrt. 2024 · Here, the authors report a modular and practical diamination of allenes, which offers efficient syntheses of β,γ-diamino carboxylates and sulfones.
Web2 apr. 2012 · This process involves the treatment of the alkene with 1 equiv. of carbon tetrabromide and 2 equiv. of methyllithium in ether at −65 °C. 163 Ultrasonic irradiation … gun shops in lockport nyWeb31 jul. 2024 · Allenes undergo many of the usual double-bond reactions, being readily hydrogenated, adding bromine, and being oxidized with potassium permanganate solution. The hydration of allenes resembles the hydration of alkynes in giving initially an unstable enol that rapidly rearranges to a ketone: bow-toting deity crosswordWeb29 mei 2012 · Internal affairs: The first general palladium-catalyzed intermolecular diamination of internal alkenes employs different nitrogen sources, which add to the … bow to the windWebAs such, our electrocatalytic synthesis exhibits various advantages over existing methods for alkene diamination, including sustainability, operational simplicity, substrate generality, … gun shops in longmontWebHALOGEN-CATALYZED DIAMINATION REACTIONS During the screening of some transition-metal halides as potential catalysts for the catalytic intra - molecular … bow to the wow now it\u0027s puppy dog palsWebHerein, we report a modular and practical diamination of allenes, which offers efficient syntheses of β,γ-diamino carboxylates and sulfones. This reaction features broad … bow toting deityWebAlthough the diamination of an alkene seems an obvious route to these structures, far less research has been devoted to it than to the analogous dihydroxylation or aminohydroxylation reactions that are well-established processes in asymmetric synthesis. bow toting deity crossword