Rh(III)-Catalyzed Oxidative C–2 Coupling of <i>N</i>-Pyridinylindoles with Benzo[<i>b</i>]thiophene 1,1-Dioxides via C–H Bond Activation
作者:Subramani Kumaran、Kanniyappan Parthasarathy
DOI:10.1021/acs.joc.1c00301
日期:2021.6.18
An efficient Rh(III)-catalyzedcross-dehydrogenativecoupling of N-pyridinylindoles with benzo[b]thiophene 1,1-dioxides has been developed through directing-group-assisted C–H activation. This transformation constructs a new C–C bond from two inert C–H bonds in a one-pot reaction. The present reaction is compatible with various functional groups with respect to indoles and benzothiophene[b] 1,1-dioxides
已经通过导向基团辅助的 C-H 活化开发了一种高效的 Rh(III) 催化的N-吡啶基吲哚与苯并 [ b ] 噻吩 1,1-二氧化物的交叉脱氢偶联。这种转化在一锅反应中由两个惰性 C-H 键构建了一个新的 C-C 键。本反应与关于吲哚和苯并噻吩[ b ] 1,1-二氧化物的各种官能团相容。此外,还探索了合成化合物的发射特性。
Synthesis and Electronic Properties of Oxidized Benzo[1,2-<i>b</i>:4,5-<i>b</i>′]dithiophenes
作者:Ted M. Pappenfus、Daniel T. Seidenkranz、Matthew D. Lovander、Travis L. Beck、Brandon J. Karels、Katsu Ogawa、Daron E. Janzen
DOI:10.1021/jo5017585
日期:2014.10.3
Benzo[1,2-b:4,5-b']dithiophenes were oxidized under mild conditions with m-CPBA to yield the corresponding bis-sulfones (or tetraoxides). These sulfones possess red-shifted absorption and emission spectra relative to the parent molecules. Electrochemical analyses reveal that the benzodithiophene molecules are transformed from electron donors to electron acceptors.
Diels–Alder Reaction of 1,3-Diarylbenzo[<i>c</i>]furans with Thiophene <i>S,S</i>-Dioxide/Indenone Derivatives: A Facile Preparation of Substituted Dibenzothiophene <i>S,S</i>-Dioxides and Fluorenones
作者:Meganathan Nandakumar、Jayachandran Karunakaran、Arasambattu K. Mohanakrishnan
DOI:10.1021/ol501175q
日期:2014.6.6
One pot syntheses of substituted dibenzothiophene S,S-dioxides and fluorenones were successfully achieved by Diels–Alder reaction of benzo[c]furans with thiophene S,S-dioxides and indenones, respectively. Photophysical properties of representative seven- and nine-membered dibenzothiophene S,S-dioxide acenes were also reported.
通过苯并[ c ]呋喃的狄尔斯-阿尔德反应分别与噻吩S,S-二氧化物和茚满酮进行Diels-Alder反应,成功地完成了一锅合成取代的二苯并噻吩S,S-二氧化物和芴酮的反应。还报道了代表性的七元和九元二苯并噻吩S,S-二氧化物并苯的光物理性质。