Cycloaddition reaction of methyl 2-pyronecarboxylates with 1,3-dienes
โ Scribed by T. Imagawa; A. Haneda; T. Nakagawa; M. Kawanisi
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 731 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0040-4020
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
The cycloaddition reactions of 1-p-tolyl and 1-benzyl-2,4-diphenyl-1,3-diazabuta-1,3-dienes with a variety of aryl and alkyl isocyanate and isothiocyanate are described. The reaction mechanism is also discussed.
The kinetics of the [2 + + 4] cycloadditions of 1,3-dithian-2-cycloaddition pathway by the correlation lg k = s (E + N). Though a concerted cycloaddition pathway is not excluded ylium ions (1) with 1,3-dienes was investigated photometrically in dichloromethane. The second-order rate by this finding,