Suzuki–Miyaura cross-coupling and ring-closing metathesis: a strategic combination to the synthesis of indeno[1,2-c]isoquinolin-5,11-diones
摘要:
A variety of diversely substituted isoindeno[1,2-c]isoquinolin-5,11-diones has been readily assembled through a sequence involving a Suzuki-Miyaura cross-coupling reaction with enol phosphates combined with a ring-closing metathesis (RCM) reaction. Intramolecular carbocationic annulation reaction and ultimate oxidation of a latent hydroxyl functionality completed the synthesis of the target titled compounds. (c) 2011 Elsevier Ltd. All rights reserved.
Asymmetric Palladium-Catalyzed Directed Intermolecular Fluoroarylation of Styrenes
作者:Eric P. A. Talbot、Talita de A. Fernandes、Jeffrey M. McKenna、F. Dean Toste
DOI:10.1021/ja412881j
日期:2014.3.19
A mild catalytic asymmetric direct fluoro-arylation of styrenes has been developed. The palladium-catalyzed three-component coupling of Selectfluor, a styrene and a boronic acid, provides chiral monofluorinated compounds in good yield and in high enantiomeric excess. A mechanism proceeding through a Pd(IV)-fluoride intermediate is proposed for the transformation and synthesis of an sp3 C–F bond.
The novel sunlight-promoted aerobic synthesis of selenated iminoisobenzofurans or isoindolinones via the regioselective and chemoselective O-cyclization or N-cyclization of olefinic amides and diselenides has been developed. Interestingly, the chemoselectivity is strongly dependent on the use of TFA as the catalyst or Na2CO3 as the base. This high efficiency and sustainable protocol performed well
硒化iminoisobenzofurans或异吲哚啉的新的太阳光促进的有氧合成通过区域选择性和化学选择性ö -cyclization或ñ烯酰胺和diselenides的-cyclization已经研制成功。有趣的是,化学选择性强烈依赖于使用TFA作为催化剂或使用Na 2 CO 3作为碱。这种高效且可持续的协议在环境空气和无金属条件下表现良好。此外,获得了一系列硒化亚氨基异苯并呋喃和异吲哚啉酮产品,收率中等至良好,具有良好的官能团耐受性和广泛的适用范围。
Continuous-flow electrosynthesis of selenium-substituted iminoisobenzofuran <i>via</i> oxidative cyclization of olefinic amides and diselenides
green and efficient approach for the synthesis of selenium-substituted iminoisobenzofuran using 2-vinylbenzamides and diselenides in a continuous electrochemicalmicroreactor has been developed. This strategy enabled the preparation of a series of iminoisobenzofuran derivatives in moderate to good yields under metal-free and oxidant-free conditions. The application of the electrochemicalflow system successfully
A series of diversely substituted 2H-2-benzazepine-1,3-diones were efficiently prepared from the unsaturated precursors, N-acyl-o-vinylbenzamides, through a ring-closing metathesis reaction. The parent compounds were easily obtained from the appropriate o-vinylbenzoic acids.
PIPERAZINE-SUBSTITUTED BENZOTHIOPHENES FOR TREATMENT OF MENTAL DISORDERS
申请人:Otsuka Pharmaceutical Co., Ltd.
公开号:US20130158044A1
公开(公告)日:2013-06-20
The present invention provides a heterocyclic compound represented by the general formula (1): The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.