Fe-Catalyzed Novel Domino Isomerization/Cyclodehydration of Substituted 2-[(Indoline-3-ylidene)(methyl)]benzaldehyde Derivatives: An Efficient Approach toward Benzo[<i>b</i>]carbazole Derivatives
作者:Kartick Paul、Krishnendu Bera、Swapnadeep Jalal、Soumen Sarkar、Umasish Jana
DOI:10.1021/ol500505k
日期:2014.4.18
A new and efficient protocol to synthesize substituted benzo[b]carbazole derivatives has been demonstrated involving iron-catalyzed domino isomerization/cyclodehydration sequences from substituted 2-[(indoline-3-ylidene)(methyl)]benzaldehyde derivatives. The substrates could be easily made via Pd-catalyzed domino Heck–Suzuki coupling from 2-bromo-N-propargylanilide derivatives in high yields. Notably
已经证明了合成取代的苯并[ b ]咔唑衍生物的新的有效方案,该方案包括由取代的2-[(二氢吲哚-3-亚甲基)(甲基)]苯甲醛衍生物进行铁催化的多米诺骨化异构/环脱水序列。通过Pd催化的多米诺骨牌Heck-Suzuki偶联可以轻松地以高产率从2-溴-N-炔丙基苯胺衍生物制备底物。值得注意的是,通过合成多环苯并呋喃衍生物进一步例证了该两阶段多米诺策略的通用性和效率。
ORGANIC ELECTROLUMINESCENT COMPOUND, A PLURALITY OF HOST MATERIALS AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME
申请人:ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
公开号:US20220033414A1
公开(公告)日:2022-02-03
The present disclosure relates to an organic electroluminescent compound represented by formula 2′ or formula 2″, a plurality of host materials comprising at least one first host compound and at least one second host compound, and an organic electroluminescent device comprising the same. An organic electroluminescent device having improved driving voltage, luminous efficiency, power efficiency and/or lifespan properties can be provided by including the organic electroluminescent compound or a specific combination of compounds according to the present disclosure as a host material(s).