ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7

Published monthly
 

The preparation of cyclic phthalides and their conversion into derivatives of 1,3-indandione. I. Naphthylphthalide and some of its derivatives

P. Hrnčiar, Ľ. Krasnec, and M. Furdík

Komenský University, Bratislava

 

Abstract: A prepn. of 3-(1-naphthylmethylene)phthalide (I) and its conversion into 2-(1-naphthyl)-1,3-indandione (II) by MeONa or EtONa in alk. medium are described. II forms small golden-yellow scales, sol. in cold dioxane and cyclohexanone and in warm alc., m. 205°. Br (1 molar equiv.) displaces a H atom in the naphthalene ring of I, giving 3-(5-bromo-1-naphthylmethylene)phthalide (III), m. 226°. Another molar equiv. Br further brominates the double bond; III with MeONa in alk. medium forms 2-(5-bromo-1-naphthyl)-1,3-indandione.

Full paper in Portable Document Format: 101a12.pdf (in Slovak)

 

Chemical Papers 10 (1) 12–18 (1956)

Tuesday, May 21, 2024

IMPACT FACTOR 2021
2.146
SCImago Journal Rank 2021
0.365
SEARCH
Advanced
VOLUMES
European Symposium on Analytical Spectrometry ESAS 2022
© 2024 Chemical Papers