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A solution of cinnoline-4-carboxylic acid (183 mg, 1.02 mmol) in methylene chloride (20 ml) was reacted with EDCI (195 mg, 1.02 mmol) and HOBt (138 mg, 1.02 mmol) for 20 min and then stirred, together with 4b-amino-9b-hydroxy-7-isopropyl-4b,9b-dihydro-5-oxa-indeno[2,1-a]-inden-10-one (250 mg, 0.85 mmol), overnight at room temperature. After extraction with methylene chloride and water, the organic layer was dried over MgSO4 and concentrated in a vacuum. Purification by column chromatography (ethylacetate:n-hexane=1:1) afforded the title compound as a white solid (290 mg, 63%). [0846] 1H-NMR (300 MHz, CD3OD) delta 1.15 (d, J=6.8 Hz, 6H, CH3), 2.82 (sep, J=6.8 Hz, 1H, CH), 6.69 (s, 1H, ArH), 6.89 (d, J=7.8 Hz, 1H, ArH), 7.45 (d, J=7.9 Hz, 1H, ArH), 7.65 (m, 1H, ArH), 7.858.03 (m, 5H, ArH) 8.42 (d, J=8.0 Hz, 1H, ArH), 8.51 (d, J=8.4 Hz, 1H, ArH), 9.45 (s, 1H, ArH)., 21905-86-2

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.21905-86-2, you can also check out more blogs about21905-86-2

Reference£º
Patent; KATHOLIEKE UNIVERSITEIT LEUVEN K.U. LEUVEN R & D; KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY; Jung, Young Sik; Lee, Chong Kgo; Kim, Hae Soo; Jeong, Hee Chun; Kim, Pil Ho; Han, Soo Bong; Shin, Jin Soo; Neyts, Johan; Thibaut, Hendrik Jan; US2014/114068; (2014); A1;,
Cinnoline – Wikipedia
Cinnoline – an overview | ScienceDirect Topics