Structural Investigation of 5-Hydrazono-5,6,7,8-tetrahydro-2H-1-benzopyran-2-ones and 5,6,7,8-Tetrahydroquinoline-2,5(1H)-diones
✍ Scribed by GolicGrdadolnik, S.; Trebse, P.; Kocevar, M.; Solmajer, T.
- Book ID
- 127344617
- Publisher
- American Chemical Society
- Year
- 1997
- Tongue
- English
- Weight
- 149 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0095-2338
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## Abstract A simple, highly selective transformation of 5,6,7,8‐tetrahydro‐2__H__‐1‐benzopyran‐2,5‐diones 1–3 and 14 with some phenylhydrazines and heterocyclic hydrazines to 5‐hydrazono‐2__H__‐1‐benzopyran‐2‐ones 4–12 and 15–16 is described. Under more severe conditions the hydrazonoquinoline der
Highly selective transformations of 5,6,7,8-tetrahydro-2H-l-benzopyran-2,5-diones I-3 and 5acetyl-2H-pyran-2-one derivative 14 with hydrazides, phenylhydrazines and heterocyclic hydrazines as nitrogen-containing nucleophiles were investigated. The benzopyran-2,5-diones were converted to the correspo