Cycloaddition reactions leading to carbohydrate derivatives part I. Hetero diels-alder reaction of monosaccharide O-thioformates

Hetero-Diels-Alder cycloadditions of α,β

Hetero-Diels-Alder cycloadditions of α,β-unsaturated acyl cyanides. Part 2. Reactions with N,N-dimethyluracils, a new route to 5-substituted uracil derivatives

✍ Jin-Cong Zhuo; Hugo Wyler 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 German ⚖ 991 KB

## 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