Conjugate Additions of <i>o</i>-Iodoanilines and Methyl Anthranilates to Acetylenic Sulfones. A New Route to Quinolones Including First Syntheses of Two Alkaloids from the Medicinal Herb <i>Ruta chalepensis</i>
作者:Thomas G. Back、Masood Parvez、Jeremy E. Wulff
DOI:10.1021/jo026595t
日期:2003.3.1
especially when the aniline contained an electron-withdrawing substituent such as an ester group. In some cases, the reactions were enhanced by the presence of DMAP and the use of an excess of the sulfone in aqueousDMF. N-Formylanilines proved superior to free anilines. The products were either vinyl or allyl sulfones, depending on the conditions and the structure of the reactants. The acetylenic sulfone
Preparation of Vinylogous 2-Sulfonylindolines by the Palladium-Catalyzed Heteroannulation of <i>o</i>-Iodoanilines with Dienyl Sulfones and Their Further Transformation to Indoles and Carbazoles
作者:Thomas G. Back、Richard J. Bethell、Masood Parvez、Jerry A. Taylor
DOI:10.1021/jo016080m
日期:2001.12.1
employed as dienes in Diels-Alder reactions with dimethyl acetylenedicarboxylate (DMAD), methyl propiolate, or methyl acrylate. In the case of the latter two dienophiles, the cycloadditions were highly regioselective, affording the corresponding 1,3-products (with respect to the relative positions of the sulfone and ester groups), exclusively. The cycloadducts from acetylenic dienophiles were converted to
Copper‐Catalyzed One‐Pot Arylation and Cyclization of Diaryliodonium Salts Derived from
<i>o</i>
‐Iodoanilines for Indolo[2,3‐
<i>b</i>
]indoles Syntheses
作者:Miseon Choi、Manish Kumar Mehra、Chung Whan Lee
DOI:10.1002/ejoc.202201286
日期:2023.1.24
A one-pot strategy to access indoloindoles with wide scope and good functional group tolerance fromdiaryliodoniumsalts is described.
描述了一种从二芳基碘盐中获得具有广泛范围和良好官能团耐受性的吲哚并吲哚的一锅法策略。
Preparation of vinylogous 2-sulfonylindolines by the palladium-catalyzed cyclization of 1-sulfonyl-1,3-dienes with N-Cbz-o-Iodoanilines
作者:Thomas G. Back、Richard J. Bethell
DOI:10.1016/s0040-4039(98)01111-3
日期:1998.7
N-Cbz-o-Iodoanilines undergo Pd(OAc)(2)-catalyzed coupling and cyclization with 1(-p-toluenesulfonyl)-1,3-dienes to afford 2-(2- p-toluenesulfonylvinyl)indolines under mild conditions. (C) 1998 Elsevier Science Ltd. All rights reserved.
Indole Synthesis Based On A Modified Koser Reagent
作者:Laura Fra、Alba Millán、José A. Souto、Kilian Muñiz
DOI:10.1002/anie.201402661
日期:2014.7.7
preparation of indoles has been developed. This process is based on sterically congested hypervalent iodine compounds of the family of Koserreagents, and iodosobenzene in combination with 2,4,5‐tris‐isopropylbenzene sulfonic acid provides the highest yields and fastest reaction times. This reagent alone promotes the chemoselective oxidative cyclization of 2‐amino styrenes to indoles in high yields