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Selective Labilizing of α-Hydrogen Atoms by Chelation of α-Aminocarboxylic Acids

✍ Scribed by Williams, Donald H.; Busch, Daryle H.

Book ID: 126930877
Publisher: American Chemical Society
Year: 1965
Tongue: English
Weight: 261 KB
Volume: 87
Category: Article
ISSN: 0002-7863
DOI: 10.1021/ja00948a045

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The Z-configurated lactam (4a) formed as by-product proved to be stable under the reaction conditions, so a chromatographic separation was necessary. In an attempt to avoid this separation step we have studied the possibilities of E-2 isomerization. Whereas in the case of unsaturated C'5-unsubstitu