Transition metal-free hydroarylation of unactivated alkynes was achieved by combining a Brønsted acid catalyst and a two-phase solvent system consisting of 1,1,1,3,3,3-hexafluoropropan-2-ol (HFIP) and cyclohexane. This protocol is applicable to a wide variety of 2-alkynylbiaryls which leads to the synthesis of substituted phenanthrenes via 6-endo-selective ring closure. The biphasic system achieves
Synthesis of aryl-substituted naphthalenes by chemoselective Suzuki–Miyaura reactions of bromo-trifluoromethanesulfonyloxy-naphthalenes. Influence of steric and electronic parameters
Chemoselective Suzuki-Miyaura reactions of 2-bromo-1-(trifluoromethanesulfonyloxy)naphthalene, 1-bromo-2-(trifluoromethanesulfonyloxy) naphthalene and 2-acetyl-4-bromo-1-(trifluoromethanesulfonyloxy)naphthalene, which are all readily available from the corresponding tetralone derivatives, afforded a variety of mono- and diarylnaphthalenes. The reactions generally proceed with excellent chemoselectivity in favour of the bromide position, no matter whether the bromide is located at position 1 or 2 of the naphthalene or whether the carbon attached to the triflate group is electronically more deficient by the presence of a neighbouring acetyl group. (c) 2012 Elsevier Ltd. All rights reserved.
[EN] ORGANIC LIGHT-EMITTING ELEMENT AND COMPOSITION FOR ORGANIC MATERIAL LAYER THEREOF<br/>[FR] ÉLÉMENT ÉLECTROLUMINESCENT ORGANIQUE ET COMPOSITION POUR COUCHE DE MATÉRIAU ORGANIQUE DE CELUI-CI<br/>[KO] 유기 발광 소자 및 유기 발광 소자의 유기물층용 조성물
申请人:LT MAT CO LTD
公开号:WO2021132995A1
公开(公告)日:2021-07-01
본 명세서는 화학식 1로 표시되는 화합물 (A) 및 화학식 2 내지 4 중 어느 하나로 표시되는 화합물 (B)를 포함하는 유기 발광 소자에 관한 것이다.
COMPOUND AND ORGANIC ELECTROLUMINESCENCE DEVICE
申请人:IDEMITSU KOSAN CO.,LTD.
公开号:US20240206325A1
公开(公告)日:2024-06-20
A compound represented by the following formula (1), wherein in the formula (1), A is a substituted or unsubstituted aromatic hydrocarbon ring group containing a nitrogen atom as a part of a substituent and having a fused ring composed of 5 or more rings, or a substituted or unsubstituted heterocyclic group containing a nitrogen atom as a part of the skeleton or a substituent and having a fused ring composed of 5 or more rings; B is a monovalent group represented by the following formula (b1); wherein in the formula (b1), *B is bonded with the nitrogen atom contained as a part of the skeleton of A or a substituent via a single bond.