Palladium-Catalyzed <i>Ortho</i>-Selective C–H Oxidative Carbonylation of <i>N</i>-Substituted Anilines with CO and Primary Amines for the Synthesis of <i>o</i>-Aminobenzamides
An efficient, one-pot strategy with high selectivity and high atom economy for the synthesis of o-aminobenzamides has been developed via palladium-catalyzed ortho-selective C–H oxidative carbonylation of N-substitutedanilines with CO and primary amines. A wide range of N-substitutedanilines and primary amines can be tolerated in this transformation to afford the corresponding o-aminobenzamides in
Nitrogen-containing heterocycle derivative and organic electroluminescent element using the same
申请人:Idemitsu Kosan Co., Ltd.
公开号:EP2174932A2
公开(公告)日:2010-04-14
A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.
KOZHEVNIKOV, YU. V.;SKVORTSOV, V. A.;SYROPYATOV, B. YA.;SMIRNOVA, N. N.;B+, IZYSKANIE FARMAKOL. I XIMIOTERAPEVT. SREDSTV IZ PRODUKTOV SINTEZA I PRIRO+
作者:KOZHEVNIKOV, YU. V.、SKVORTSOV, V. A.、SYROPYATOV, B. YA.、SMIRNOVA, N. N.、B+
DOI:——
日期:——
ZALESOV V. S.; PILAT V. V.; GRADEL I. I., V SB. ZHZUCH. BIOL. DEJSTVIYA NOVYX PRODUKTOV ORGAN. SINTEZA I PRIROD. SO+
作者:ZALESOV V. S.、 PILAT V. V.、 GRADEL I. I.
DOI:——
日期:——
Novel Alternative for the N<i>−</i>N Bond Formation through a PIFA-Mediated Oxidative Cyclization and Its Application to the Synthesis of Indazol-3-ones
The synthesis of a series of N,N‘-disubstituted indazolone derivatives starting from methyl anthranilates is presented. This general approach features a novel and easy way for access to the target N-heterocycles by formation of a new N−N single bond. The key cyclization step embraces the formation of an N-acylnitrenium intermediate, mediated by the hypervalent iodine reagent PIFA, and its succeeding