Multiple Aryne Insertions into Oxindoles: Synthesis of Bioactive 3,3-Diarylated Oxindoles and Dibenzo[<i>b</i>,<i>e</i>]azepin-6-ones
作者:Ramesh Samineni、Chandramohan Reddy C. Bandi、Pabbaraja Srihari、Goverdhan Mehta
DOI:10.1021/acs.orglett.6b03224
日期:2016.12.2
bioactive di- and triarylated oxindoles in good yields under mild conditions. A temperature controlled “reaction switch” enables ready access to dibenzo[b,e]azepin-6-one derivatives employing the same reaction regime. This tactic has been extended to a short synthesis of potent antiulcer agent darenzepine.
The present invention addresses the problem of providing; a novel bisphenol compound having an indoline skeleton; and a novel aromatic polycarbonate which uses this bisphenol compound as a starting material dihydroxy compound. The above-described problem is able to be solved by an aromatic polycarbonate that contains a repeating unit represented by general formula (2).
in the aromaticringvia metal-free catalysis is very important. In this regard, we have developed a facile metal-free, extremely selective, user-friendly, environmentally benign and cost-effective Friedel-Crafts (FC) alkylation protocol for 2-oxindoles and anilines with donor-acceptor cyclopropanes. Real-time NMR studies reveal that the transformation is governed by the cooperative catalysis of Brønsted
Copper-Catalyzed Chemoselective O-Arylation of Oxindoles: Access to Cyclic Aryl Carboxyimidates
作者:Prasoon Raj Singh、Manisha Lamba、Avijit Goswami
DOI:10.1021/acs.joc.3c02341
日期:2024.3.1
chemoselective CuO-catalyzed strategy for the O-arylation of 2-oxindoles to synthesize 2-phenoxy-3H-indole and 2-phenoxy-1H-indole derivatives in the presence of diaryl iodonium salts. This method offers a variety of O-arylated oxindoles in good to excellent yields under relatively milder reaction conditions. Furthermore, this methodology was extended for the O-arylation of 2-pyridinone and isoindoline-1-one
我们开发了一种高效的无碱和无添加剂的化学选择性 CuO 催化策略,用于在存在 2-oxindoles 的情况下进行 O-芳基化合成 2-phenoxy-3 H -indole 和 2-phenoxy-1 H -indole 衍生物。二芳基碘鎓盐。该方法在相对温和的反应条件下以良好至优异的收率提供了各种O-芳基化羟吲哚。此外,该方法还扩展到 2-吡啶酮和异吲哚啉-1-酮衍生物的 O-芳基化。
Bisphenol compound and aromatic polycarbonate
申请人:Honshu Chemical Industry Co., Ltd.
公开号:US10759755B2
公开(公告)日:2020-09-01
The present invention addresses the problem of providing; a novel bisphenol compound having an indoline skeleton; and a novel aromatic polycarbonate which uses this bisphenol compound as a starting material dihydroxy compound. The above-described problem is able to be solved by an aromatic polycarbonate that contains a repeating unit represented by general formula (2).