59-48-3, The chemical industry reduces the impact on the environment during synthesis 59-48-3, name is Indolin-2-one, I believe this compound will play a more active role in future production and life.
(b) Preparation of 5-Nitro-2-oxindole. The 2-oxindole (6.5 g) was dissolved in 25 mL of concentrated sulfuric acid and the mixture maintained at -10-15 C. while 2.1 mL of fuming nitric acid was added dropwise. After the addition of the nitric acid the reaction mixture was stirred at 0 C. for 0.5 hr and poured into ice water. The precipitate was collected by filtration, washed with water and crystallized from 50% of the acetic acid. The final crystal was then filtered, washed with water and dried under vacuum to give 6.3 g (70%) of 5-nitro-2-oxindole.
The chemical industry reduces the impact on the environment during synthesis Indolin-2-one. I believe this compound will play a more active role in future production and life.
Reference:
Patent; Sugen, Inc.; US6147106; (2000); A;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem