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Photochemical Synthesis of Cyclic 2-(2,2-Dimethylpropylidene)-1,3-dicarbonyl Compounds

✍ Scribed by Klaus Hobel; Paul Margaretha

Publisher
John Wiley and Sons
Year
1989
Tongue
German
Weight
257 KB
Volume
72
Category
Article
ISSN
0018-019X

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✦ Synopsis

d, ' ) ' ) U V (i-PrOH); IR (CC1,); 'H-NMR (CDCI,); I3C-NMR (CDCI,). U V (cyclohexane); IR (CC1,); 'H-NMR (C,D,); 13C-NMR (C,D,). UV (i-PrOH); 1R (CCI4); 'H-NMR (CDCI,); 13C-NMR (CDCI,). 3: 1 Mixture of diastereoisomers. NMR data for the major component. U V (cyclohexane); IR (CCI,); 'H-NMR (C,D,); 'IC-NMR (CDCI,). UV (i-

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Iodo cyclofunctionalization of 2,4-dialk
Iodo cyclofunctionalization of 2,4-dialkenyl-1,3-dicarbonyl compounds: Synthesis of substituted 3-(2-furylidene)-2-furanones
✍ Claudete J. Valduga; HΓ©lio A. Stefani; Nicola Petragnani πŸ“‚ Article πŸ“… 2002 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 73 KB

## Abstract A facile method for the synthesis of substituted 3‐(2‐furylidene)‐2‐furanones has been developed using cyclofunctionalization reactions of 2,4‐dialkenyl‐1,3‐dicarbonyl compounds and iodine as electrophile in the presence of Na~2~CO~3~, in refluxing chloroform. Compounds 4 are obtained i