To use all functions of this page, please activate cookies in your browser.
my.chemeurope.com
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
ThioacetalThioacetals are the sulfur analogue of acetals. They are prepared in a similar way to acetals: by reacting a thiol with an aldehyde:
Additional recommended knowledgeDithioacetals are prepared similarly to thioacetals, which are intermediates:
Such reactions typically employ either a Lewis or Brønsted acid catalyst. Dithioacetals generated from aldehydes and 1,2-ethanedithiol are useful in organic synthesis:
Whereas the carbonyl carbon of an aldehyde is electrophilic, the deprotonated derivatives of dithioacetals feature nucleophilic carbon centers:
Again, this reactivity is most commonly exploited in the 1,3-dithiolanes. The inversion of polarity between R'(H)Cδ+Oδ- and R'CLi(SR)2 is referred to as umpolung. See also
|
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Thioacetal". A list of authors is available in Wikipedia. |