التفاصيل البيبلوغرافية
| العنوان: |
Organocatalytic Synthesis of Substituted Vinylene Carbonates. |
| المؤلفون: |
Onida, Killian1, Haddleton, Alice J.2, Norsic, Sébastien2, Boisson, Christophe2, D'Agosto, Franck2, Duguet, Nicolas1 nicolas.duguet@univ-lyon1.fr |
| المصدر: |
Advanced Synthesis & Catalysis. 11/23/2021, Vol. 363 Issue 22, p5129-5137. 9p. |
| مصطلحات موضوعية: |
*CARBONATES, *NATURAL products, *BENZOIN, *ACYLOINS, *DIPHENYL |
| مستخلص: |
The organocatalytic synthesis of substituted vinylene carbonates from benzoins and acyloins was studied using diphenyl carbonate as a carbonyl source. A range of N-Heterocyclic Carbene (NHC) precursors were screened and it was found that imidazolium salts were the most active for this transformation. The reaction occurs at 90 °C under solvent-free conditions. A wide range of substituted vinylene carbonates (symmetrical and unsymmetrical, aromatic or aliphatic), including some derived from natural products, were prepared with 20-99% isolated yields (24 examples). The reaction was also developed using thermomorphic polyethylene-supported organocatalysts as recoverable and recyclable species. The use of such species facilitates the workup and allows the synthesis of vinylene carbonates on the preparative scale (>30 g after 5 runs). [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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