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Synthese von Makrocyclen durch Ringerweiterung von 14gliedrigen cyclischen Imiden

✍ Scribed by Thomas Koch; Vassil I. Ognyanov; Manfred Hesse

Publisher
John Wiley and Sons
Year
1992
Tongue
German
Weight
430 KB
Volume
75
Category
Article
ISSN
0018-019X

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✦ Synopsis

Synthesis of Macrocyles by Ring Enlargement of 14‐Membered Cyclic Imides

In the presence of a base, cyclododecanone derivative 2, activated in α‐position by an allyloxycarbonyl group, underwent ring enlargement with isocyanates to give 14‐membered imides (Schemes 1–3). Cleavage of the activating group gave new 14‐membered imides which could be transformed by further ring‐enlargement reactions into new macrocyclic compounds.

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