Phosphine‐Catalyzed β‐Selective Conjugate Addition of α‐Fluoro‐β‐ketoamides to Allenic Esters

A Strategy for the β‐selective conjugate addition of α‐fluoro‐β‐ketoamides to allenic esters has been developed via phosphine catalysis. This protocol exhibits a broad substrate scope, and a wide range of compounds bearing fluorinated quaternary carbon center was obtained in good to excellent yields...

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Veröffentlicht in:European journal of organic chemistry 2019-09, Vol.2019 (35), p.6138-6142
Hauptverfasser: Vaishanv, Narendra Kumar, Zaheer, Mohd Khalid, Kant, Ruchir, Mohanan, Kishor
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container_issue 35
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container_title European journal of organic chemistry
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creator Vaishanv, Narendra Kumar
Zaheer, Mohd Khalid
Kant, Ruchir
Mohanan, Kishor
description A Strategy for the β‐selective conjugate addition of α‐fluoro‐β‐ketoamides to allenic esters has been developed via phosphine catalysis. This protocol exhibits a broad substrate scope, and a wide range of compounds bearing fluorinated quaternary carbon center was obtained in good to excellent yields. This protocol allows the use of γ‐substituted allenic esters to furnish the products with exclusive β‐selectivity. A strategy for the β‐selective conjugate addition of α‐fluoro‐β‐ketoamides to allenic esters has been developed via phosphine catalysis and demonstrated for a wide range of ketoamides and allenoate substrates.
doi_str_mv 10.1002/ejoc.201901199
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source Wiley Online Library Journals Frontfile Complete
subjects Allenic esters
Catalysis
Conjugate addition
Conjugates
Esters
Fluorination
Homogeneous catalysis
Selectivity
Substrates
Synthesis design
α‐Fluoro‐β‐ketoamides
title Phosphine‐Catalyzed β‐Selective Conjugate Addition of α‐Fluoro‐β‐ketoamides to Allenic Esters
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