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ChemInform Abstract: Preparation of 5-Amino-1,2-dihydro-4-(1-methyl-4-piperidinyl)pyrrol-3-ones.

✍ Scribed by Bohdan A. Chalyk; Anton V. Tverdokhlebov; Rustam T. Iminov; Andrey A. Tolmachev

Publisher
John Wiley and Sons
Year
2009
Weight
25 KB
Volume
40
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

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## 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