Anionic N-Fries Rearrangement of N-Alkyl-2-iodo Anilides Induced by Iodine−Magnesium Exchange: Application for Synthesis of Strained 1,2,3-Trisubstituted Indoles
摘要:
A superior, mild, high-yielding one-pot process for rapid access to oxo anilides has been developed that involves three cascade reactions: iodine-magnesium exchange, regiospecific ortho N-Fries rearrangement, and in situ trapping of the formed aniline anion. Coupled with McMurry cyclization, the two-step process allows ready synthesis of strained 1,2,3-trisubstituted indoles regioselectively.
Platinum(ii)-catalyzed intermolecular hydroarylation of unactivated alkenes with indoles
作者:Zhibin Zhang、Xiang Wang、Ross A. Widenhoefer
DOI:10.1039/b607286k
日期:——
Ethylene, alpha-olefins, and vinyl arenes undergo platinum-catalyzed hydroarylation with substituted indoles in moderate to good yield.
乙烯,α-烯烃和乙烯基芳烃与取代的吲哚进行铂催化的加氢芳基化反应,产率中等至良好。
One-pot, three-component Fischer indolisation–<i>N</i>-alkylation for rapid synthesis of 1,2,3-trisubstituted indoles
作者:Christopher A. Hughes-Whiffing、Alexis Perry
DOI:10.1039/d0ob02185g
日期:——
A one-pot, three-component protocol for the synthesis of 1,2,3-trisubstituted indoles has been developed, based upon a Fischer indolisation–indole N-alkylation sequence. This procedure is very rapid (total reaction time under 30 minutes), operationally straightforward, generally high yielding and draws upon readily available building blocks (aryl hydrazines, ketones, alkyl halides) to generate densely
Catalytic Carbon–Carbon Bond Activation of Saturated and Unsaturated Carbonyl Compounds via Chelate-Assisted Coupling Reaction with Indoles
作者:Nuwan Pannilawithana、Chae S. Yi
DOI:10.1021/acscatal.0c01245
日期:2020.5.15
promote a highly regioselective catalytic C–C bondactivation reaction of saturated and unsaturated carbonylcompounds. The cationic Ru–H complex 1 was found to be an effective catalyst for mediating the coupling reaction of 1,2-disubstituted indoles with α,β-unsaturated aldehydes and ketones, in which the regioselective Cα–Cβ activation of the carbonyl substrates has been achieved in forming the 3-alkylindole
Three-component spiropyran synthesis via tandem alkylation-condensation
作者:Harriet Swinson、Alexis Perry
DOI:10.1016/j.tet.2020.131219
日期:2020.6
A catalyst-free, three-component alkylation-condensation cascade for spiropyran synthesis has been developed, using readily available building blocks (indoles, alkyl halides, salicylaldehydes) and environmentally benign solvents (water, ethanol). A cascade approach enables this sequence to proceed under mild conditions which, in turn, promote broad substrate tolerance and operational simplicity. Consequently
Utilisation de (CH 3 ) 3 SiCN comme reactif d'interceptions des intermediaires peroxydes dans le cas de la photooxygenation de derives de l'indole, du methoxymethylene-2 adamantane et du methyl-1 pyrrole
利用 (CH 3 ) 3 SiCN comme reactif d'interceptions des intermediaires dans le cas de la photooxygenation de衍生的吲哚、二甲氧基亚甲基-2金刚烷和二甲基-1吡咯