Formation of α-SF5-Enolate Enables Preparation of 3-SF5-Quinolin-2-ones, 3-SF5-Quinolines, and 3-SF5-Pyridin-2-ones: Evaluation of their Physicochemical Properties

This study describes, for the first time, the generation of a SF5‐substituted ester enolate from benzyl SF5‐acetate under soft enolization conditions, which in turn participates in aldol addition reactions in high yield. The reaction was applied in the synthesis of 3‐SF5‐quinolin‐2‐ones, 3‐SF5‐quino...

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Published inAngewandte Chemie Vol. 128; no. 6; pp. 2153 - 2157
Main Authors Joliton, Adrien, Plancher, Jean-Marc, Carreira, Erick M.
Format Journal Article
LanguageEnglish
Published Blackwell Publishing Ltd 05.02.2016
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ISSN0044-8249
1521-3757
DOI10.1002/ange.201510380

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Summary:This study describes, for the first time, the generation of a SF5‐substituted ester enolate from benzyl SF5‐acetate under soft enolization conditions, which in turn participates in aldol addition reactions in high yield. The reaction was applied in the synthesis of 3‐SF5‐quinolin‐2‐ones, 3‐SF5‐quinolines, and 3‐SF5‐pyridin‐2‐ones, none of which have previously been reported. To provide guidelines for their use in drug discovery, the physicochemical properties of these building blocks were determined and compared with those of their CF3‐ and t‐Bu‐analogues. SF5 leicht eingeführt: Aldolreaktionen von Enolaten, die in α‐Stellung zu einer Pentafluorsulfanyl‐Gruppe erzeugt wurden, lieferten SF5‐substituierte Heterocyclen in hervorragenden Ausbeuten. Ein Vergleich der physikochemischen Daten mit denen ihrer Trifluormethyl‐ und tert‐Butyl‐Analoga bestätigt, dass die SF5‐Gruppe ein Surrogat für CF3‐ und t‐Bu‐Gruppen darstellt und eine Feineinstellung von Eigenschaften ermöglichen könnte.
Bibliography:ETH Zürich - No. ETH 26 13-1
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ABCR
ArticleID:ANGE201510380
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201510380