ChemInform Abstract: Sulfonamide and Tertiary Amine as Nucleophiles in Pd(II)‐Catalyzed Diamination of Alkynes: Synthesis of Tetracyclic Indolobenzothiazine S,S‐Dioxides

A high‐yielding three‐step preparation of the title products is described consisting of a Sonogashira‐coupling of 2‐iodobenzenesulfonamides with N‐2‐(methoxycarbonyl)ethyl protected 2‐alkynylaniline, Pd‐catalyzed intramolecular diamination, and removal of the N‐protecting group.

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Published inChemInform Vol. 47; no. 13; p. no
Main Authors Ha, Tu M., Yao, Bo, Wang, Qian, Zhu, Jieping
Format Journal Article
LanguageEnglish
Published Weinheim WILEY‐VCH Verlag 01.03.2016
Wiley Subscription Services, Inc
Subjects
cascade reactions, domino reactions, tandem reactions
catalysis, phase‐transfer catalysis
protection, deprotection
ring closure reactions, annulation reactions
thiazine derivatives
Online AccessGet full text
ISSN0931-7597
1522-2667
DOI10.1002/chin.201613180

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Abstract A high‐yielding three‐step preparation of the title products is described consisting of a Sonogashira‐coupling of 2‐iodobenzenesulfonamides with N‐2‐(methoxycarbonyl)ethyl protected 2‐alkynylaniline, Pd‐catalyzed intramolecular diamination, and removal of the N‐protecting group.
AbstractList A high-yielding three-step preparation of the title products is described consisting of a Sonogashira-coupling of 2-iodobenzenesulfonamides with N-2-(methoxycarbonyl)ethyl protected 2-alkynylaniline, Pd-catalyzed intramolecular diamination, and removal of the N-protecting group.
Author Ha, Tu M.
Yao, Bo
Wang, Qian
Zhu, Jieping
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Cites_doi 10.1021/acs.orglett.5b02621
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  article-title: Sulfonamide and Tertiary Amine as Nucleophiles in Pd(II)‐Catalyzed Diamination of Alkynes: Synthesis of Tetracyclic Indolobenzothiazine S,S‐Dioxides.
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Snippet A high‐yielding three‐step preparation of the title products is described consisting of a Sonogashira‐coupling of 2‐iodobenzenesulfonamides with...
A high-yielding three-step preparation of the title products is described consisting of a Sonogashira-coupling of 2-iodobenzenesulfonamides with...
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SubjectTerms cascade reactions, domino reactions, tandem reactions
catalysis, phase‐transfer catalysis
protection, deprotection
ring closure reactions, annulation reactions
thiazine derivatives
Title ChemInform Abstract: Sulfonamide and Tertiary Amine as Nucleophiles in Pd(II)‐Catalyzed Diamination of Alkynes: Synthesis of Tetracyclic Indolobenzothiazine S,S‐Dioxides
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