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Synthesis of 1-iodo-1,2,3,4,4a,9a-hexahydrocarbazoles and their isomerization into 3-iodo-2,4-propano-1,2,3,4-tetrahydroquinolines

✍ Scribed by R. R. Gataullin; F. F. Minnigulov; T. V. Khakimova; A. A. Fatykhov; L. V. Spirikhin; I. B. Abdrakhmanov


Book ID
110401893
Publisher
Springer
Year
2002
Tongue
English
Weight
320 KB
Volume
51
Category
Article
ISSN
1573-9171

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Synthesis of 1-methyl-, 4-nitro-, 4-amin
✍ Y. C. Fiamegos; G. A. Pilidis; G. Varvounis 📂 Article 📅 2001 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 44 KB

## Abstract 4‐Aminopyrazole‐3‐ones **4b, e, f** were prepared from pyrazole‐3‐ones **1b‐d** in a four‐step reaction sequence. Reaction of the latter with methyl __p__‐toluenesulfonate gave 1‐methylpyrazol‐3‐ones **2b‐d**. Compounds **2b‐d** were treated with aqueous nitric acid to give 4‐nitropyraz