Palladium-Catalyzed Domino CH/NH Functionalization: An Efficient Approach to Nitrogen-Bridged Heteroacenes
作者:Natsuyo Kamimoto、Dieter Schollmeyer、Koichi Mitsudo、Seiji Suga、Siegfried R. Waldvogel
DOI:10.1002/chem.201500897
日期:2015.5.26
Palladium‐catalyzed domino CH/NH functionalization for the synthesis of novel nitrogen‐bridged thienoacenes and 10H‐benzo[4,5]thieno[3,2‐b]indole derivatives from dihaloarene is reported. This domino sequence consists of initial CH functionalization of the benzo[b]thiophene moiety, followed by Buchwald–Hartwig coupling. This transformation is also useful for the synthesis of highly π‐extended compounds.
钯催化的多米诺Ç H /Ñ ħ官能新型含氮桥连thienoacenes的合成和10 ħ -苯并[4,5]噻吩并[3,2- b ]报道从二卤代芳烃吲哚衍生物。该多米诺序列由苯并[ b ]噻吩部分的初始CH功能化,然后是布赫瓦尔德-哈特维格偶联。这种转变对于合成高度π扩展的化合物也很有用。
作者:P. V. Santhini、Akhil Krishnan R、Sheba Ann Babu、Betna Shamlin Simethy、Gourab Das、Vakayil K. Praveen、Sunil Varughese、Jubi John
DOI:10.1021/acs.joc.7b02039
日期:2017.10.6
was found to be general, affording both symmetric and nonsymmetric indolo[3,2-b]indoles in good yields. The strategy was also utilized for accessing 5-ring fused benzo[g]indolo[3,2-b]indole. We could extend the methodology for the synthesis of benzothieno[3,2-b]indoles starting from 3-nitrobenzothiophene. The importance of the developed method was exemplified by performing the reaction sequence on gram
开发了一种直接的合成路线,以合成吲哚稠合的杂炔。该策略由一锅法组成,该方法从环己酮,伯胺和N-甲苯磺酰基-3-硝基吲哚的多组分反应开始,然后进行氧化步骤。发现一锅法是通用的,以良好的产率提供对称和不对称的吲哚[3,2- b ]吲哚。该策略还用于访问5环稠合苯并[g]吲哚并[3,2- b ]吲哚。我们可以扩展合成苯并噻吩并[3,2- b的方法从3-硝基苯并噻吩开始的吲哚。通过以克为单位进行反应序列以及吲哚并[3,2- b ]吲哚的合成转化反应了所开发方法的重要性。另外,还研究了随着合成杂苯的共轭作用的扩展,光物理性质的变化。