Palladium-Catalyzed Domino Heck/C–H Activation/Decarboxylation: A Rapid Entry to Fused Isoquinolinediones and Isoquinolinones
作者:Xiai Luo、Liwei Zhou、Haiyan Lu、Guobo Deng、Yun Liang、Chunming Yang、Yuan Yang
DOI:10.1021/acs.orglett.9b03883
日期:2019.12.20
A new palladium-catalyzed tandem cyclization of various alkene-tethered aryliodides has been presented. In this protocol, o-bromobenzoic acids are employed as coupling parters to achieve the insertion of aromatic rings by the cleavage of C(sp2)-Br and decarboxylation, thus assembling various dibenzoisoquinolinediones and dibenzoisoquinolinones. In addition, a seven-membered ring can be constructed
The present invention relates to benzo[b]furane and benzo[b]thiophene derivatives of the general formula IV as the free base or salts thereof and their use.
Electron-Transfer-Induced Intramolecular Heck Carbonylation Reactions Leading to Benzolactones and Benzolactams
作者:Ilhyong Ryu、Takahide Fukuyama、Takanobu Bando
DOI:10.1055/s-0037-1609964
日期:2018.8
Radical Methods and their Strategic Applications in Synthesis Abstract A metal-catalyst-free intramolecular Heck carbonylationreaction of benzyl alcohols and benzyl amines with carbonmonoxide under heating at 250 °C affords the corresponding benzolactones and benzolactams in good to excellent yields. A hybrid radical/ionic chain mechanism, involving electron transfer from radical anions generated by nucleophilic
[EN] TRIAZOLE COMPOUND AND USE THEREOF IN AGRICULTURE<br/>[FR] COMPOSÉ DE TRIAZOLE ET SON UTILISATION EN AGRICULTURE
申请人:DONGGUAN HEC PESTICIDES R&D CO LTD
公开号:WO2020063756A1
公开(公告)日:2020-04-02
A novel triazole compound of the formula (IV) is provided, it can be used in agriculture, wherein R1 is cyclopropyl and the like; X is -CH2-and the like; each of R4 and R6 is independently hydrogen, fluorine, chlorine, CH3-, etc.; each of R3 and R7 is hydrogen, fluorine, chlorine, idoine, CH3-, -OCF3, etc.; R5 is hydrogen, fluorine, chlorine, bromine, idoine, -CF3, -OCH2CN, -OCH2CH=CH2, etc.
Synthesis of biaryls via intramolecular free radical ipso-substitution reactions
作者:Feroze Ujjainwalla、Maria Lucília E.N. da Mata、Andrew M.K. Pennell、Carmen Escolano、William B. Motherwell、Santiago Vázquez
DOI:10.1016/j.tet.2015.07.048
日期:2015.9
intramolecular freeradical [1,5]-ipso-substitution using sulfonamide and sulfonate derived tethering chains. The overall efficiency of the process is determined by appropriately positioned substituents on the aromatic acceptor ring. The extension of the process to benzylic sulfonates and their corresponding N-methylsulfonamide alternatives as substrates in potential [1,6]-ipso-substitution reactions leads