التفاصيل البيبلوغرافية
| العنوان: |
N-Heterocyclic Carbene-PromotedAnnulation Reaction of Allenals with Chalcones: Synthesis of PolysubstitutedPyranyl Aldehydes. |
| المؤلفون: |
Ma, Dengke1, Qiu, Youai1, Dai, Jianxin1, Fu, Chunling1, Ma, Shengming1 |
| المصدر: |
Organic Letters. Sep2014, Vol. 16 Issue 18, p4742-4745. 4p. |
| مصطلحات موضوعية: |
*CARBENES, *HETEROCYCLIC compounds, *ANNULATION, *CHALCONES, *ALDEHYDES, *PROTON transfer reactions |
| مستخلص: |
A general N-heterocyclic carbene (NHC)-promotedannulation reaction of allenals with chalcones affording polysubstitutedpyranyl aldehydes has been developed. Three mechanistic possible pathwayshave been proposed. The NHC attacks the center carbon of allenalsor acts as a base for deprotonation and then undergoes a 1,4-additionwith chalcones, followed by sequential reactions giving the finalproducts. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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