Rh-Catalyzed Domino Addition–Enolate Arylation: Generation of 3-Substituted Oxindoles via a Rh(lll) Intermediate
摘要:
A Rh-catalyzed domino conjugate addition-arylation sequence via a Rh(III) intermediate is reported. This process involving a proposed intramolecular oxidative addition of a rhodium enolate was utilized to achieve the synthesis of 3-substituted oxindole derivatives in moderate to excellent yields.
报道了一种通过多米诺环化反应合成简明方法的方法,该方法涉及多米诺环化反应,该反应涉及Pd催化的Sonogashira偶联,吲哚环化,区域和化学选择性N-1酰化以及1,4-Michael加成。该方法可直接获得四氢[1,4]二氮杂ino [1,2- a ]吲哚和六氢[1,5]二重氮杂酚[1,2- a ]吲哚支架。
Visible-light-induced surfactant-promoted sulfonylation of alkenes and alkynes with sulfonyl chloride by the formation of an EDA-complex with NaI in water at room temperature
scope, good functional group tolerance, simple operation, scalability and high chemical selectivity. Thus, it not only provided a green and efficient synthetic strategy for the preparation of β-iodo-substituted sulfone derivatives, but also enriched the investigation of visible-light-induced reactions in water.
Catalytic bimetalic [Pd(0)/Ag(I) Heck-1,3-dipolar cycloaddition cascade reactions accessing spiro-oxindoles. Concomitant in situ generation of azomethine ylides and dipolarophile
作者:Emma L. Millington、H. Ali Dondas、Colin W.G. Fishwick、Colin Kilner、Ron Grigg
DOI:10.1016/j.tet.2018.05.017
日期:2018.7
Spiro-oxindoles, epi-Spirotryprostatin A and its analogues were prepared from a tactical combination of cascade catalytic bimetallic Pd (0)/Ag(I), intramolecular Heck and subsequent imine → azomethineylide → 1,3-Dipolar cycloadditionreactions. The cascade features in situ generation of azomethineylides and dipolarophiles and produces two new rings together with three stereocentres in good to excellent
catalysis of CuI/1H-pyrrole-2-carboxylic acid. The coupling products underwent oxidation to afford the azo compounds, which were subjected to deprotection with TFA and in situ cyclization to give 1,2,4-benzotriazines.
Regio- and Chemoselective N-1 Acylation of Indoles: Pd-Catalyzed Domino Cyclization to Afford 1,2-Fused Tricyclic Indole Scaffolds
作者:Yongxian Liu、Yuanqiong Huang、Hongjian Song、Yuxiu Liu、Qingmin Wang
DOI:10.1002/chem.201406617
日期:2015.3.27
method for the synthesis of 1,2‐fused tricyclicindolescaffolds by dominocyclization involving a Pd‐catalyzed Sonogashira coupling, indolecyclization, regio‐ and chemoselective N‐1 acylation, and 1,4‐Michael addition is reported. This method provides straightforward access to tetrahydro[1,4]diazepino[1,2‐a]indole and hexahydro[1,5]diazocino[1,2‐a]indolescaffolds.
报道了一种通过多米诺环化反应合成简明方法的方法,该方法涉及多米诺环化反应,该反应涉及Pd催化的Sonogashira偶联,吲哚环化,区域和化学选择性N-1酰化以及1,4-Michael加成。该方法可直接获得四氢[1,4]二氮杂ino [1,2- a ]吲哚和六氢[1,5]二重氮杂酚[1,2- a ]吲哚支架。
Synthesis of 7-alkylidene-7,12-dihydroindolo[3,2-d]benzazepine-6-(5H)-ones (7-alkylidene-paullones) by N-cyclization–oxidative Heck cascade and characterization as sirtuin modulators
作者:J. G. Denis、G. Franci、L. Altucci、J. M. Aurrecoechea、Á. R. de Lera、R. Álvarez
DOI:10.1039/c4ob02493a
日期:——
A palladium-induced cascade of N-cyclization and oxidative Heck reaction of o-alkynylanilines produced 7-alkylidene-indolobenzazepinones (paullones) that have sirtuin modulation activities.