Divergent Strategies for the π-Extension of Heteroaryl Halides Using Norbornadiene as an Acetylene Synthon
作者:Siyeon Jeong、Eunmin Kim、Minkyu Kim、Ye Ji Hwang、Birakishore Padhi、Jonghoon Choi、Yunho Lee、Jung Min Joo
DOI:10.1021/acs.orglett.0c03732
日期:2020.12.18
reactions of five-membered heteroaryl halides and norbornadiene (NBD) were developed. Either direct addition of (benzo)azoles or 2:1 annulation was achieved depending on the propensity of the intermediate complex to undergo palladacycle formation, determined by the nature and substitution pattern of the heteroarene. The obtained exo- and cis-diheteroaryl norbornenes underwent epimerization and retro-Diels–Alder
A diversity-oriented approach to indolocarbazoles via Fischer indolization and olefin metathesis: total synthesis of tjipanazole D and I
作者:Sambasivarao Kotha、Mohammad Saifuddin、Vikas R. Aswar
DOI:10.1039/c6ob01679k
日期:——
Starting with cyclohexanone, a bench-top starting material, this methodology has been extended to the total synthesis of natural products such as tjipanazoles D and I as well as the core structure of asteropusazole and racemosin B. Here, atom economical reactions like ring-closing metathesis, enyne-metathesis, and the Diels–Alder reaction have been used as key steps. Diverse strategies demonstrated
Described herin are molecules for use in organic light emitting diodes. Example molecules comprise at least one acceptor moiety A, at least one donor moiety D, and optionally one or more bridge moieties B. Each moiety A is covalently attached to either the moiety B or the moeity D, each moiety D is covalently attached to either the moeity B or the moeity A, and each B is covalently attached to at least one moiety A and at least one moiety D. Values and preferred values of moieties A, D and B are defined herein.
Composition of matter for use in organic light-emitting diodes
申请人:Kyulux North America, Inc.
公开号:US10892425B1
公开(公告)日:2021-01-12
The present disclosure relates to compounds of formula (I) or formula (II)
as compounds capable of emitting delayed fluorescence and uses of these compounds in organic light-emitting diodes.
[EN] NOVEL SPIROBENZOSUBERANE COMPOUNDS FOR USE IN ORGANIC ELECTRONIC DEVICES<br/>[FR] NOUVEAUX COMPOSÉS DE SPIROBENZOSUBERANE DESTINÉS À ÊTRE UTILISÉS DANS DES DISPOSITIFS ÉLECTRONIQUES ORGANIQUES
申请人:SOLVAY
公开号:WO2016102414A1
公开(公告)日:2016-06-30
Compounds of formula (1) wherein U, V, W and X, which may be the same or different at each occurrence, represent a substituent group selected from (2), (3), (4) wherein Z is N or P, Y is CR5R6, NR7, SiR8R9, PR10, P(=O)R11 or BR12.