File:Enantioselective Organocatalytic Syntheses and Ring‐Expansions of Cyclobutane Derivatives (MédiHAL 3370299).jpg

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English: The progress in enantioselective organocatalysis have enabled efficient and highly stereoselective syntheses of cyclobutane derivatives, through (2 + 2) annulation reactions, overcoming the geometrical constraints inherent to these small cyclic molecules. More importantly, and taking advantage of their strain-releasing fragmentation, some cyclobutane derivatives, especially cyclobutanones and cyclobutenones, can now be regarded as versatile four-carbon atoms units amenable to the enantioselective construction of larger rings by (4 + n) annulation reactions to produce, five-, six-, seven-and eightmembered cyclic products. These recent developments concerning the enantioselective synthetic chemistry of cyclobutane derivatives under organocatalytic conditions are reviewed herein.
Date Taken on 7 June 2021
Source Enantioselective Organocatalytic Syntheses and Ring‐Expansions of Cyclobutane Derivatives
Author

Manuel Barday, Pierre Bouillac, Yoann Coquerel, Muriel Amatore, Thierry Constantieux, Jean Rodriguez

Thierry Constantieux   wikidata:Q106572457
 
Alternative names
T Constantieux
Description French-Algerian research fellow
Authority file
creator QS:P170,Q106572457
institution QS:P195,Q30295259
institution QS:P195,Q2302586
institution QS:P195,Q3152386
institution QS:P195,Q280413
Keywords
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Small ring systems; Strained molecules; Medium-ring compounds; Organocatalysis; Ring expansion

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This work is in the public domain in France for one of the following reasons:
  • Its author (or the last of its authors in the case of a collaboration work) died more than 70 years ago (CPI art. L123-1) and did not benefit from any copyright extension (CPI art. L123-8, L123-9 and L123-10)[1];
  • It is an anonymous or pseudonymous work (the identity of the author has never been disclosed) or a collective work[2] and more than 70 years have passed since its publication (CPI art. L123-3);
  • It is the recording of an audiovisual or musical work already in the public domain, and more than 50 years have passed since the performance or the recording (CPI art. L211-4).
Please note that moral rights still apply when the work is in the public domain. They encompass, among others, the right to the respect of the author's name, quality and work (CPI art. L121-1). Attribution therefore remains mandatory.
  1. ↑ Copyright extensions must be considered only in the case of musical works and of authors Mort pour la France (died during conflict, in the service of France). In other cases, they are included in the 70 years post mortem auctoris length (see this statement of the Cour de Cassation).
  2. ↑ The collective work status is quite restrictive, please make sure that it is actually established.

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