41795-26-0Relevant articles and documents
Visible light promoted iodofluoroalkylation of alkenes with iodo-3-oxaperfluoroalkanesulphonates
He, Dongmei,Guo, Yong,Chen, Qing-Yun,Yang, Hu,Lv, Tao
, p. 1 - 7 (2019)
Iodo-3-oxa-perfluoroalkanesulfonyl fluorides (I(CF2CF2)n+1OCF2CF2SO2F, n = 0, 1, 2, 3) was functionalized by phenol to provide phenyl fluoroalkanesulfonate. The ATRA reaction of I(CF2
Rhodium(III)-Catalyzed Synthesis of Skipped Enynes via C(sp3)–H Alkynylation of Terminal Alkenes
Della-Felice, Franco,Zanini, Margherita,Jie, Xiaoming,Tan, Eric,Echavarren, Antonio M.
supporting information, p. 5693 - 5698 (2021/02/09)
The RhIII-catalyzed allylic C?H alkynylation of non-activated terminal alkenes leads selectively to linear 1,4-enynes at room-temperature. The catalytic system tolerates a wide range of functional groups without competing functionalization at other positions. Similarly, the vinylic C?H alkynylation of α,β- and β,γ- unsaturated amides gives conjugated Z-1,3-enynes and E-enediynes.
Synthesis of Esters from Stable and Convenient Sulfoxonium Precursors under Catalyst- And Additive-Free Conditions
Wu, Xiao-Feng,Yuan, Yang
, p. 1820 - 1824 (2019/09/09)
A convenient and efficient procedure for the construction of esters from stable sulfoxonium ylides and alcohols has been developed. This protocol presents a broad substrate scope and good yields of the desired esters can be isolated. Notably, no catalyst, oxidant, base or any other additive is required.
Trifluoromethylfluorosulfonylation of Unactivated Alkenes Using Readily Available Ag(O2CCF2SO2F) and N-Fluorobenzenesulfonimide
Liu, Yongan,Wu, Hao,Guo, Yong,Xiao, Ji-Chang,Chen, Qing-Yun,Liu, Chao
supporting information, p. 15432 - 15435 (2017/11/10)
Presented is a novel intermolecular radical trifluoromethylfluorosulfonylation of unactivated alkenes under mild reaction conditions with good functional-group tolerance in the most atom-economic manner by using readily available Ag(O2CCF2SO2F) and N-fluorobenzenesulfonimide (NFSI). Both the trifluoromethyl and sulfonyl groups in the products originate from Ag(O2CCF2SO2F).
Oxidation of acyclic alkenes and allyl and benzyl ethers with DIB/t-BuOOH/Mg(OAc)2
Sastraruji, Thanapat,Pyne, Stephen G.,Ung, Alison T.
, p. 598 - 602 (2012/01/05)
Oxidation of (11Z)-1′,2′-didehydrostemofoline with DIB/TBHP/Mg(OAc)2·4H2O resulted in oxidative cleavage of the C-11-C-12 double bond instead of the desired allylic oxidation of the 1-butenyl side chain. Stemofoline gave a similar result. The oxidation of more simple terminal alkenes was regioselective and gave vinyl ketones while allyl and benzyl ethers gave acrylate and benzoate esters, respectively. Allyl and benzyl ethers could be chemoselectively oxidized in the presence of a terminal alkene or benzyl group. Oxidation of an internal alkene was poorly regioselective, in contrast to the oxidation of 1-substituted cyclohexenes.
Enhancement of the efficiency of the low temperature method for kinetic resolution of primary alcohols by optimizing the organic bridges in porous ceramic-immobilized lipase
Sakai, Takashi,Hayashi, Kyoko,Yano, Fumika,Takami, Mie,Ino, Megumi,Korenaga, Toshinobu,Ema, Tadashi
, p. 1441 - 1446 (2007/10/03)
For the enhancement of enantioselectivity and acceleration of the reaction rate in the lipase-catalyzed resolution of primary alcohols, the use of a very low reaction temperature (-30 °C) and an immobilized lipase on organic bridges-coated porous ceramic support was found to be highly effective. Furthermore, the structure of the organic bridges greatly influenced the temperature effect between in E and 1/T as well as the reaction rate. Among the organic bridges examined in the resolution of (±)-2-hydroxymethyl-1,4-benzodioxane, the 6-(2-methylpropanoyloxy)hexylsilanetrioxyl bridge was the best choice for both the E value and the reaction rate at -30 °C.
Graphite-catalyzed acylative cleavage of ethers with acyl halides
Suzuki, Yoshitada,Matsushima, Masayuki,Kodomari, Mitsuo
, p. 319 - 320 (2007/10/03)
Graphite is found to catalyze acylative cleavage of ethers such as benzylic, allylic, tert-butylic and cyclic ethers with acyl halides to give the corresponding esters in good to excellent yields. Benzylic ether was cleaved chemoselectively, when a variety of other functional groups was present, to produce the corresponding ester along with benzyl halide.
Radical-chain Decomposition of Cyclohexa-1,4-diene-3-carboxylates and 2,5-Dihydrofuran-2-carboxylates
Binmore, Gavin,Walton, John C.,Cardellini, Liberato
, p. 27 - 28 (2007/10/02)
3-Methylcyclohexa-1,4-diene-3-carboxylates and 2-methyl-2,5-dihydrofuran-2-carboxylates decompose to generate free alkyl radicals which have been incorporated into chain reactions producing alkyl bromides, alkene adducts and ring-closure products.
