applied to the corresponding furan systems, which led to pinpoint-fluorinated naphtho[b]furans. INTRODUCTION Sulfur-containing π-extended molecules have attracted an increasing amount of attention as organic electronic materials. In particular, oligoand polythiophenes, where every two thiophene rings are connected to each other by a single bond, have been studied from the very early stage of this chemistry
Regioselectivity‐Switchable Intramolecular Hydroarylation of Ynone
作者:Feng Wu、Shiwei Lu、Shifa Zhu
DOI:10.1002/adsc.202001152
日期:2020.12.22
catalytic approach to the regioselective intramolecular hydroarylation of ynone has been developed. When ZnI2 was used as catalyst, the umpolung α‐arylation of ynone was realized via an addition‐elimination process of iodine ion to generate the ortho‐phenanthrenequinone methide (o‐PQM), which could be trapped by styrene to form benzo[f,h]chromenes through hetero‐Diels‐Alderreaction. While IPrAuCl/AgSbF6
A general and efficient synthesis of substituted fluorenes and heterocycle-fused indenes containing thiophene or indole rings utilizing a Suzuki–Miyaura coupling and acid-catalyzed Friedel–Crafts reactions as key steps
作者:Guijie Li、Erjuan Wang、Haoyi Chen、Hongfeng Li、Yuanhong Liu、Peng George Wang
DOI:10.1016/j.tet.2008.07.021
日期:2008.9
A general and efficient synthesis of fluorenes or heterocycle-fused indenes including 3-thia-cyclopenta[a]indenes, 9-thia-indeno[1,2-a]indenes, 5,6-dihydroindeno[2,1-b]indoles has been developed. This methodology is realized by a multistep protocol involving first preparation of ortho-formylbiaryls through Suzuki–Miyaura coupling of o-bromobenzaldehydes with arylboronic acids or the coupling of aryl
芴或杂环稠合的茚基的一般有效合成方法,包括3-噻吩环戊[ a ]茚,9-噻吩[1,2- a ]茚,5,6-二氢茚并[ 2,1- b ]吲哚已经被开发出来。这种方法是由涉及的第一制备多步协议实现邻-formylbiaryls通过铃木-宫浦耦合的ø-溴苯甲醛与芳基硼酸的结合或芳基卤化物与2-甲酰基苯硼酸的偶联,然后进行Brignard加成反应或Lewis酸催化的Friedel-Crafts环化反应,形成所需的芴或茚环。该方法具有许多优点,例如产率高,选择性高,反应条件温和,起始原料容易获得等。
χ-Shaped Bis(areno)-1,4-dihydropyrrolo[3,2-<i>b</i>]pyrroles Generated by Oxidative Aromatic Coupling
作者:Maciej Krzeszewski、Daniel T. Gryko
DOI:10.1021/acs.joc.5b00052
日期:2015.3.6
concise route. These nearly planar compounds were prepared starting from assembling the central core via condensation of 2-aryl or 2-heteroarylbenzaldehydes with aromatic amines and diacetyl, followed by double intramolecular oxidativearomatic coupling. This two-step procedure afforded the desired products in overall yields of 5–36%, and it tolerates structural diversity of starting materials. All the
通过简洁的途径,已经实现了与两个周边芳烃或杂环单元融合的二氢吡咯并[3,2- b ]吡咯的合成。这些近乎平面的化合物是通过将2-芳基或2-杂芳基苯甲醛与芳族胺和二乙酰基缩合,然后进行两次分子内氧化芳族双键的组装来组装中心核而制备的。这两个步骤的过程以5–36%的总收率提供了所需的产品,并且可以耐受原料的结构多样性。所有最终染料在溶液中均显示出强烈的蓝色荧光。
Therapeutic compounds
申请人:——
公开号:US20040229910A1
公开(公告)日:2004-11-18
The present invention relates to certain novel benzylamine derivatives, to processes for their preparation, to pharmaceutical formulations containing them and to their use in medical therapy, particularly in the treatment of depression.