[C:1](OC1C=CC(C2C=CC=CC=2)=CC=1)(=[O:4])[C:2]#[CH:3].[NH2:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1.C(O)(=O)C#C.C1CCC(N=C=NC2CCCCC2)CC1>CN(C1C=CN=CC=1)C>[C:19]1([NH:18][C:1](=[O:4])[C:2]#[CH:3])[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1The compound 20 was prepared according to the method described for compound 1 employing aniline (1 g, 0.01 mol), propargylic acid (0.76 g, 0.01 mol), DCC (2.2 g, 0.01) and DMAP (8.6 mg, 0.07 mmol) to give brown solid compound 20 (1.35 g, 87%). 1H NMR (300 MHz, CD2Cl2) δ 2.93 (s, 1H), 7.15 (t, J=6.9 Hz, 1H), 7.33 (t, J=7.5 Hz, 2H), 7.52 (t, J=7.4 Hz, 2H), 7.79 (br s, 1H).
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