ISSN:
0170-2041
Schlagwort(e):
2-Pyrazolin-5-one
;
Chemistry
;
Organic Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The reaction of some active methylene compounds with 4-(dicyanomethylene)-3-methyl-1-phenyl-2-pyrazoline-5-one (1a) has been investigated. This reaction involves a Michael addition to afford 4-spirocyclobutenes 3 or cyclopyran-2-pyrazoline-5-ones 4, depending on the active methylene derivatives used. A possible rationalization of the reaction pathway is proposed.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jlac.1991199101164