Directing Selectivity to Aldehydes, Alcohols, or Esters with Diphobane Ligands in Pd-Catalyzed Alkene Carbonylations
作者:Dillon W. P. Tay、James D. Nobbs、Srinivasulu Aitipamula、George J. P. Britovsek、Martin van Meurs
DOI:10.1021/acs.organomet.1c00228
日期:2021.6.28
trifluoromethylphenylene-bridged diphobane L1 with an electron-withdrawing substituent, lead to ester products via alkoxycarbonylation, whereas BCOPE gives predominantly alcohol products (n-nonanol and isomers) via reductive hydroformylation. The preference of BCOPE for reductive hydroformylation is also seen in the hydroformylation of 1-hexene in diglyme as the solvent, producing heptanol as the major product, whereas
A Convenient Iron-Catalyzed Method for the Preparation of 1,2-Bis(trimethylsilyl)benzenes
作者:Hermann Wegner、Samuel Bader、Simon Kessler
DOI:10.1055/s-0030-1258144
日期:2010.8
A convenient iron-catalyzed method for the preparation of 1,2-bis(trimethylsilyl)benzenes is presented. Compared to the current procedures, low temperatures and toxic solvents are avoided, allowing large-scale preparation. Additionally, a variety of substituents are tolerated.
Synthesis of Phthalonitriles
Using a Palladium Catalyst
作者:Michael Hanack、Zafar Iqbal、Alexey Lyubimtsev
DOI:10.1055/s-2008-1078269
日期:——
An easy synthetic method to obtain phthalonitriles from o-dibromobenzenes under mild conditions in high yields using Zn(CN)2 and a catalytic amount of tris(dibenzylideneacetone)dipalladium and 1,1′-bis(diphenylphosphino)ferrocene is described.
[EN] ORGANIC COMPOUND, FIELD ELEMENT, ORGANIC LIGHT-EMITTING ELEMENT, DISPLAY APPARATUS, IMAGE INFORMATION-PROCESSING APPARATUS, LIGHTING APPARATUS, IMAGE-FORMING APPARATUS, AND EXPOSURE APPARATUS<br/>[FR] COMPOSÉ ORGANIQUE, ÉLÉMENT DE CHAMP, ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE, APPAREIL D'AFFICHAGE, APPAREIL DE TRAITEMENT D'INFORMATIONS D'IMAGES, APPAREIL D'ÉCLAIRAGE, APPAREIL DE FORMATION D'IMAGES ET APPAREIL D'EXPOSITION
申请人:CANON KK
公开号:WO2015198579A1
公开(公告)日:2015-12-30
A bibenzo[d]imidazolidene compound inert to oxygen is provided. An aspect of the invention provides a 1,1',3,3'-tetraphenyl-2,2'-bibenzo[d]imidazolidene compound according to Claim 1, which is represented by general formula (1). In formula (1), R1 to R28 are each independently selected from a hydrogen atom and a substituent. The substituent is any of a halogen atom, an alkyl group containing 1 or more and 8 or less carbon atoms, and a substituted or unsubstituted aryl group. At least one of R1 to R28 is the substituent.
提供一种对氧气惰性的双苯并[ d ]咪唑烷化合物。发明的一个方面提供了根据权利要求1提供的1,1',3,3'-四苯基-2,2'-双苯并[ d ]咪唑烷化合物,其由通式(1)表示。在式(1)中,R1至R28分别独立地选自氢原子和取代基。取代基是卤素原子、含有1个或多个碳原子和8个或更少碳原子的烷基基团,以及取代或未取代的芳基基团中的任何一种。R1至R28中至少有一个是取代基。
Reactivity-Controlled Regioselectivity: A Regiospecific Synthesis of 1,2-Disubstituted Benzimidazoles
作者:Xiaohu Deng、Neelakandha S. Mani
DOI:10.1002/ejoc.200901056
日期:2010.2
combination of N 1 /N 2 chemoselectivity on the amidine and reactivity-controlled X 1 /X 2 chemoselectivity on the 1,2-dihaloarene. This reaction proves to be fairly general for the regiospecificsynthesis of 1,2-substituted benzimidazoles.