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Organocatalytic Multicomponent α-Methylenation/Diels–Alder Reactions: A Versatile Route to Substituted Cyclohexenecarbaldehyde Derivatives

✍ Scribed by Yue Zou; Quanrui Wang; Andreas Goeke

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 396 KB
Volume: 14
Category: Article
ISSN: 0947-6539
DOI: 10.1002/chem.200800145

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## Abstract The [4 + 2] cycloadditions of 2‐oxobut‐3‐enenitrile (1a), 2‐oxopent‐3‐enenitrile (1b), and ethyl 4‐cyano‐4‐oxobut‐2‐enoate (1c) with 1,3‐dimethyluracil (2), 1,3, 6‐trimethyluracil (9), or 1,3,5‐trimethyluracil (16) were investigated. The reactions of 1a with 2 or with 9 lead to bicyclic