Enantioselective Addition of Diphenylphosphine to 3-Methyl-4-nitro-5-alkenylisoxazoles
โ Scribed by Chew, Renta Jonathan; Huang, Yinhua; Li, Yongxin; Pullarkat, Sumod A.; Leung, Pak-Hing
- Book ID
- 120483713
- Publisher
- John Wiley and Sons
- Year
- 2013
- Tongue
- English
- Weight
- 203 KB
- Volume
- 355
- Category
- Article
- ISSN
- 1615-4150
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๐ SIMILAR VOLUMES
Reactions of 4-nitro-3(5)-pyrazolecarboxylic acid dipotassium salt with different methylating agents in various solvents have been investigated to improve the synthesis of isomeric 1-methyl-4-nitro-3-and -5-pyrazolecarboxylic acids.
A simple four-stage conversion of 2-1nethyl-4(5>nitroimidazole to 2-methyl-4(5)-nitr0['~N""]imidazole is reported. The method consists in N-nitration of the initial compound to ?-methyl-1,4-dinitroimidazole, treating the latter with ["Nlglycine and N-dealkylation of the obtained (~-rnethyl-4-nitro[~