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Über die Entstehung von α-Keto-carbonium-Ionen bei der säurekatalysierten Hydrolyse von Diazoketonen. (Vorläufige Mitteilung)

✍ Scribed by H. Dahn; H. Gold; M. Ballenegger; J. Lenior; G. Diderich; R. Malherbe


Publisher
John Wiley and Sons
Year
1968
Tongue
German
Weight
344 KB
Volume
51
Category
Article
ISSN
0018-019X

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**About the Stereospecific α‐Alkylation of β‐Hydroxyesters** It was found, that dianions derived from β‐hydroxyesters with lithium diisopropylamide (LDA) at −50 to −20° were alkylated stereospecifically (__Scheme 1__). The stereospecificity was 95–98%, the __threo__‐compound (__threo__**‐2, ‐3** an