Electric Literature of 17564-64-6, Researchers are common within chemical engineering and are often tasked with creating and developing new chemical techniques, frequently combining other advanced and emerging scientific areas.
General procedure: The initial carbonyl compound (50 mmol) was dissolved/suspended in ethanol (50 mL) and magnetically stirred with thiosemicarbazide (50 mmol) and catalytic amounts of acetic acid for 8-24 h at room temperature. The obtained thiosemicarbazone was filtered, washed with appropriate solvent (n-hexane, petroleumether or diethyl ether) and dried under vacuum. The intermediate thiosemicarbazone (50 mmol) reacted with ethyl bromoacetate (50 mmol), in methanol (50 mL) and sodium acetate (50 mmol) at room temperature under magnetic stirring for 24 h. The resulting 4-thiazolidinone was poured on ice, filtered or extracted with chloroform (3 x 100 mL) and purified by column chromatography (SiO2, ethyl acetate/n-hexane). Then, the obtained thiazolidinone (50 mmol) was dissolved/suspended in 50 mL of anhydrous acetone in the presence of anhydrous potassium carbonate (50 mmol), and reacted with equimolar amounts of 4-nitrobenzyl bromide, 1-(chloromethyl)naphthalene and N-(chloromethyl)phthalimide for 24-48 h. The product was poured on ice, filtered or extracted with chloroform (3 x 50 mL) and purified by column chromatography (SiO2, ethyl acetate/n-hexane) in order to obtain the title compoundsin high yields. 7.1.55 2-((2-(2-(Pentan-2-ylidene)hydrazono)-4-oxothiazolidin-3-yl)methyl)isoindoline-1,3-dione (3C) White powder, mp 125-126 C, 84% yield; 1H NMR (400 MHz, CDCl3): delta 0.92-0.95 (t, 3H, CH3), 1.59-1.61 (m, 2H, CH2), 1.93 (s, 3H, CH3), 2.23-2.27 (t, 2H, CH2), 3.83 (s, 2H, CH2, thiazolidinone), 5.73 (s, 2H, ArCH2), 7.75-7.76 (m, 2H, Ar), 7.86-7.87 (m, 2H, Ar). 13C NMR (100 MHz, CDCl3): delta 13.8, 14.0, 17.5, 19.6, 19.8, 22.9, 32.2, 34.1, 40.6, 45.0, 45.1, 123.6, 131.7, 134.3, 158.0, 166.7, 170.0, 171.1.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 2-(Chloromethyl)isoindoline-1,3-dione, its application will become more common.
Reference:
Article; De Monte, Celeste; Carradori, Simone; Bizzarri, Bruna; Bolasco, Adriana; Caprara, Federica; Mollica, Adriano; Rivanera, Daniela; Mari, Emanuela; Zicari, Alessandra; Akdemir, Atilla; Secci, Daniela; European Journal of Medicinal Chemistry; vol. 107; (2016); p. 82 – 96;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem