GLORIA

GEOMAR Library Ocean Research Information Access

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The reaction of ethylenimine and sulfur with methyl ethyl ketone, methyl isopropyl ketone and ethyl isopropyl ketone, resp., yields the structurally isomeric 5.6-dihydro-1.4-thiazines (1–6) and as by-products the thiazolidines (7–9) derived from the corresponding ketones. The 5.6-dihydro-1.4-thiazines are converted with formic acid to the N-formyl thiomorpholines10–15, which are easily hydrolyzed with dilute hydrochloric acid to the corresponding thiomorpholines (16–21). The ratio of the pairs of structurally isomeric thiomorpholines is determined by quantitative gas chromatography.
    Notes: Zusammenfassung Bei der Einwirkung von Äthylenimin und Schwefel auf Methyläthylketon, Methylisopropylketon und Äthylisopropylketon entstehen strukturisomere 5,6-Dihydro-1,4-thiazine (1–6) und als Nebenprodukte die dem jeweiligen Keton entsprechenden Thiazolidine (7–9). Die 5,6-Dihydro-1,4-thiazine werden mit Ameisensäure in N-Formylthiomorpholine (10–15) übergeführt, die mit verd. HCl glatt zu den entsprechenden Thiomorpholinen (16–21) hydrolysiert werden. Das Verhältnis der Thiomorpholin-Isomerenpaare wird gaschromatographisch quantitativ bestimmt.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...