Adding a certain compound to certain chemical reactions, such as: 2058-72-2, name is 5-Bromo-1-methylindoline-2,3-dione, belongs to indolines-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 2058-72-2, Safety of 5-Bromo-1-methylindoline-2,3-dione
General procedure: To a solution of L-proline-melamine complex (3 mol%) in DMSO (2 mL) was added dimedone 0.025 mg (0.178 mmol), malononitrile (1 equiv) and benzaldehyde / isatin (1 equiv) and stirred at room temperature for 1-20 min. After completion of the reaction (monitored by TLC), ethyl acetate was added stirring and continued for another 5 min. The precipitate formed was filtered. Evaporation of solvent gave the crude product which was recrystallized using ethanol to give the pure compound.
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Reference:
Article; Nagaraju, Sakkani; Paplal, Banoth; Sathish, Kota; Giri, Santanab; Kashinath, Dhurke; Tetrahedron Letters; vol. 58; 44; (2017); p. 4200 – 4204;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem