Justus Liebigs Annalen der Chemie

Darstellung und Hydrolyse von 4??Halogenmethylen??1.3??dioxolanen

H Meister

Index: Meister,H. Justus Liebigs Annalen der Chemie, 1969 , vol. 724, p. 128 - 136

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Citation Number: 5

Abstract

Abstract Durch basenkatalysierte Addition von Formaldehyd an 1-Halogen-propin-(1)-ole- (3)(3) werden 4-Halogenmethylen-1.3-dioxolane (4a–o) erhalten. Die saure Hydrolyse von 4 führt zu 1-Halogen-propanol-(3)-onen-(2)(5a–f, i–o). Soweit diese eine primäre oder sekundäre Hydroxy-Gruppe enthalten (5a–f), werden sie beim Erwärmen in die 2.3- Diketone 6 bzw. 7a–c und Halogenwasserstoff gespalten.

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