name: (S)-2-((2-Oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)isoindoline-1,3-dione,Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations.
20 g of 2-({(5S) -2-oxo-3-[4-(3-oxomo holin-4-yl) henyl]-1 ,3-oxazolidin-5-yl}methyl)-1H- isoindole-1,3(2H)-dione was suspended in 450 ml of ethanol, which was followed by addition of 6 ml of hydrazinehydrate in 50 ml of ethanol and the mixture was stirred and refluxed for 3 hours. Then, the suspension was cooled down to 65C and filtered and the cake was washed with 2×50 ml of nearly boiling ethanol. After drying 7.2 g of an off-white powder were obtained, which slowly melted at a temperature over 260C (this fraction contained 99.9% of 2,3-dihydrophtalazine-l,4-dione according to HPLC). After cooling of the hot filtrate another solid fraction separated. After its isolation by filtration and drying, 12.5 g of white lumpy powder with the melt, point of 141-144C was obtained (this fraction contained 86.7% of the desired product, 12.7% of 2,3-dihydrophtalazine-l,4-dione, and the rest to 100 % were other unidentifiable impurities according to HPLC). The yield of the isolated amine calculated to the pure substance was 73%.
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Reference:
Patent; ZENTIVA, K.S.; HALAMA Ales; KRULIS Radim; DAMMER, Ondrej; KALASEK, Stanislav; WO2013/120465; (2013); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem