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Diels-Alder reactivity of a ketovinylphosphonate with cyclopentadiene and furan
✍ Scribed by Cynthia K. McClure; Karl B. Hansen
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- French
- Weight
- 254 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
The multidentate Lewis acids B-octamethyl [12]-mercuracarborand-4 (1) and B-hexamethyl [9]mercuracarborand-3 (2) catalyze the Diels-Alder reaction of a thionoester 4 with cyclopentadiene. The reaction proceeds more rapidly when catalyzed with 1 and 2 than with monodentate bis(closo-9,12-dimethyl-1,2
Cycloaddition of cyclopentadiene with a D-arabinose-derived cis-dienophile, methyl (Z)-4,5,6,7-tetra-O-acetyl-2,3-dideoxy-D-arabino-hept-2-enonate (2), under thermal conditions gave essentially a single norbornene adduct, isolated crystalline in 81% yield and identified by NMR spectroscopy and X-ray