## Abstract Reactions of methyl pyrazole‐4‐carboxylates 4b‐d with __N__‐chlorosuccinimide under heating conditions without a solvent gave methyl 3,5‐dichloro‐1‐methylpyrazole‐4‐carboxylate 4a in good yields. The reaction of 4a with sodium hydrosulfide led to a nucleophilic substitution on the 5‐pos
ChemInform Abstract: Synthesis of Halosulfuron-Methyl via Selective Chlorination at 3- and/ or 5-Position of Pyrazole-4-carboxylates.
✍ Scribed by K. MORIMOTO; T. SATO; S. YAMAMOTO; H. TAKEUCHI
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 31 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0931-7597
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📜 SIMILAR VOLUMES
## Abstract Cross‐coupling of the bromides or iodides of the substituted isomeric diphenyl(methylthio)pyrazoles with a wide range or aromatic and heteroaromatic boronic acids tolerates many functional groups and affords the products with high yields.
## 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 v
## 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 v