## Abstract The reaction of some active methylene compounds with 4β(dicyanomethylene)β3βmethylβ1βphenylβ2βpyrazolineβ5βone (1a) has been investigated. This reaction involves a Michael addition to afford 4βspirocyclobutenes 3 or cyclopyranβ2βpyrazolineβ5βones 4, depending on the active methylene der
β¦ LIBER β¦
A facile cyclization of 4-(2-chloroethyl)-3-methyl-2- pyrazolin-5-one to a spirocyclopropane derivative
β Scribed by Magnien, Ernest; Tom, W.
- Book ID
- 126773504
- Publisher
- American Chemical Society
- Year
- 1967
- Tongue
- English
- Weight
- 282 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0022-3263
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## Abstract For Abstract see ChemInform Abstract in Full Text.