ChemInform Abstract: An Unusual 3,4-Dihydroisoquinoline Ring Enlargement with the Annulation of Pyrazole.
β Scribed by Yurii V. Shklyaev; Vladimir A. Glushkov; Viktor V. Davidov; Valentina I. Sokol; Vladimir S. Sergienko
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 28 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
Ring Transformation of 3-Halo-4-methoxycoumarins into Pyrazoles with Hydrazines. -Treatment of (I) with hydrazine at room temperature affords the pyrazoles (II). In the reaction of (I) with excess hydrazine and phenylhydrazine unexpected pyrazolinones (III) and (V), respectively, are obtained.
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