Chemoselective N-Acylation of Indoles and Oxazolidinones with Carbonylazoles
作者:Stephen T. Heller、Erica E. Schultz、Richmond Sarpong
DOI:10.1002/anie.201203976
日期:2012.8.13
Unique reactivity: In the presence of more reactive amine and alcohol functional groups and of carboxylic acids, the chemoselective N‐acylation of indoles (see scheme) and oxazolidinones is achieved by taking advantage of the unique reactivity of carbonylazole acylating agents with catalytic amounts of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU).
A [copper(I)pyridine-containing ligand]-catalyzed reaction between 2-vinylindoles and diazo esters is described. The reaction allows for the synthesis of a series of 2-vinylcyclopropa[b]indolines with excellent levels of regio- and sterocontrol under mild conditions.
描述了2-乙烯基吲哚和重氮酯之间的[含铜(I)吡啶的配体]催化的反应。该反应允许在温和条件下合成一系列具有优异的区域控制和立体控制水平的2-乙烯基环丙基[ b ]二氢吲哚。
Platinum-Catalyzed, One-Pot Tandem Synthesis of Indoles and Isoquinolines via Sequential Rearrangement of Amides and Aminocyclization
作者:Noriko Okamoto、Kei Takeda、Reiko Yanada
DOI:10.1021/jo101347f
日期:2010.11.19
By using platinum(II) chloride as a Lewis acid catalyst, concise and efficient syntheses of indole carbamates, 1,2-dihydroisoquinoline carbamates, macrocyclic indole carbamates, indole ureas, and indole phosphoranes have been achieved via tandem Hofmann-type rearrangement of 2-alkynylbenzamides and 2-alkynylbenzylamides, nucleophilic addition of alcohols and amines to the isocyanate intermediates,
A palladium-catalyzed dearomatizing [2+2+1] spiroannulation of indoles with two molecular internal alkynes is developed in the presence of Cu(OAc)2/O2 as the oxidant, in which a domino sequence including C–H activation of indole followed by consecutive Heck reactions is involved. A range of 3,3′-spiroindolines bearing tetrasubstituted cyclopentadiene moieties and exocyclic C═C bonds at C2 are obtained