Über die bevorzugte Bildung von trans‐Epoxiden bei der Technetiumkatalysierten Flüssigphasenoxidation von cis/trans‐n‐Alkenen
作者:
Siegbert Rummel,
Dieter Schnurpfeil,
期刊:
Journal für Praktische Chemie
(WILEY Available online 1987)
卷期:
Volume 329,
issue 1
页码: 10-18
ISSN:0021-8383
年代: 1987
DOI:10.1002/prac.19873290103
出版商: WILEY‐VCH Verlag GmbH
数据来源: WILEY
摘要:
About the Formation of trans‐Epoxides in the Liquid Phase Oxidation of cis/trans‐n‐Alkenes Catalyzed by TechnetiumThe liquid‐phase oxidation of n‐oct‐1‐ene, cis‐oct‐4‐ene and cis/trans mixtures of oct‐4‐ene with molecular oxygen in the presence of the technetium complexes1to10was studied. Low epoxide yields (≦10%) are characteristic features of the reactions. Pure cis‐oct‐4‐ene and mixtures of cis/trans‐oct‐4‐ene yields in cis/trans‐epoxide ratios lower than 0.05. Isomerization reactions and nucleophilic epoxide ring opening reactions are not responsible for the low epoxide yield and the favoured formation of trans‐epoxide. Epoxide decomposition by a Tc‐catalyzed radical reaction
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