ISSN:
1434-4475
Keywords:
1-Dicyanomethylene-3-indanone
;
1-Dicyanomethylene-3-phenylamino-2-indenes
;
Indano-(2,1-c)pyridazines
;
Phenylamino-indano-(2,1-c)pyridines
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary 1-Dicyanomethylene-3-indanone (1) shows a remarkable reactivity of the carbonyl- and the methylene-function towards nucleophiles. With anilines and phenylhydrazine, resp., the deep-red colored pentamethinecyanines2 and3 are formed, azocoupling leads to indano-pyridazines4. With diphenylformamidines anilinomethylene-indanones5 are obtained in a primary reaction, followed by ring closure and Dimroth-rearrangement to indano-pyridines6.13C- and15N-NMR-spectrocopy is used for confirmation of the structures.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00809972
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