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Organocatalytic Enantioselective [3+2] Cycloaddition of Azomethine Ylides with 2,4-Dienals: Construction of Remote Stereogenic Centers via 1,6-Addition Reaction
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DOI：10.1002/adsc.202000813.png)
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Abstract
En 中文
A regio- and stereoselective [3+2] cycloaddition of phthalazinium dicyanomethanides with 2,4-dienals was achieved with the use of a commercially available MacMillan's calalyst via LUMO-lowering activation. The reaction proceeds through 1,6-additon to linear 2,4-dienals with remote control over stereochemistry, affording the cycloadducts having three stereogenic centers.
Keywords:
asymmetric catalysis
organocatalysis
cycloaddition
trienamine
azomethine ylide
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