17630-75-0Relevant articles and documents
Attempted synthesis of a Tenidap isomer and formation of an unexpected stable water adduct
Esses-Reiter,Reiter
, p. 927 - 933 (2000)
An attempt to synthesize the Tenidap isomer 13 was performed starting from 2-ethoxy-5-chloroindole (9). The acylation and carbamoylation reactions of 9 led to the expected intermediate 12, however the hydrolysis of 12 in acidic or alkaline media did not y
Synthesis of indolones and quinolones by reductive cyclisation of o-nitroaryl acids using zinc dust and ammonium formate
Dinesh, Bhima Reddy,Baba, A. Ramesha,Sankar, K. Udaya,Gowda, D. Channe
, p. 287 - 288 (2008)
A novel protocol for the synthesis of indolone and quinolone derivatives from o-nitroaryl acids was developed using Zn and HCO2NH4 under supercritical fluid carbon dioxide (scCO2) medium. The process involves the reduction of the nitro group to an amino group followed by in situ cyclisation.
Direct Superacid-Promoted Difluoroethylation of Aromatics
Artault, Maxime,Vitse, Kassandra,Martin-Mingot, Agnès,Thibaudeau, Sébastien
supporting information, (2021/12/22)
Under superacid conditions, aromatic amines are directly and regioselectively 1,1-difluoroethylated. Low temperature in situ NMR studies confirmed the presence of benzylic α-fluoronium and α-chloronium ions as key intermediates in the reaction. This method has a wide substrate scope and can be applied to the late-stage functionalization of natural alkaloids and active pharmaceutical ingredients.
Room Temperature Benzofused Lactam Synthesis Enabled by Cobalt(III)-Catalyzed C(sp2)?H Amidation
Tian, Xun,Li, Xin,Duan, Shengzu,Du, Ya,Liu, Tongqi,Fang, Yongsheng,Chen, Wen,Zhang, Hongbin,Li, Minyan,Yang, Xiaodong
, p. 1050 - 1058 (2020/12/18)
Benzofused lactams, especially indolin-2-one and dihydroquinolin-2-one are popular structural motives in durgs and natural products. Herein, we developed a room temperature and robust synthesis of benzofused lactams through cobalt(III)-catalyzed C(sp
Synthesis of 2-Oxindoles from Substituted Indoles by Hypervalent-Iodine Oxidation
Jiang, Xinpeng,Zheng, Cong,Lei, Lijun,Lin, Kai,Yu, Chuanming
, p. 1437 - 1442 (2018/04/06)
A practical conversion of indoles into the corresponding 2-oxindoles is achieved efficiently using a hypervalent iodine reagent. This oxidation is amenable to different substituted indoles, and allows the synthesis of a wide range of synthetically valuable substituted 2-oxindoles in up to 90 % yield. Furthermore, Ropinirole, a drug used to alleviate the symptoms of Parkinson's disease, was synthesized in three steps in an overall yield of 44 % using this method.