A common heterocyclic compound, the benzoxazole compound, name is Benzo[d]oxazol-2-amine,cas is 4570-41-6, mainly used in chemical industry, its synthesis route is as follows.,4570-41-6
General procedure: A slurry of (2-chloro-4-(1-(3,4,5-trimethoxyphenyl)-lH-imidazol-4-ylamino)pyrrolo[1,2- f][1,2,4]triazin-7-yl)methanol (101b) (97 mg, 0.23 mmol), (S)-pyrrolidin-2-ylmethanol (171 mg, 1.69 mmol), di-tert-butyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine (di-t-Bu-XPhos, 14 mg, 0.034 mmol), Pd2(dba)3 (14 mg, 0.016 mmol), sodium tert-butoxide (162 mg, 1.69 mmol) in PhMe (5 mL) was degassed and placed in a sealed reactor. The reaction was heated at 100 ¡ãC for 48 hr, cooled to room temperature, quenched with saturated aqueous H4CI and extracted with ethyl acetate (3 x 20 mL). The organic layers were combined, washed with water, brine, dried, filtered and concentrated in vacuum to dryness. The residue obtained was purified by flash column chromatography (Silica gel 12 g, eluting with MeOH in DCM from 0 to 40percent) to afford (S)-(l-(7-(hydroxymethyl)-4-(l-(3,4,5-trimethoxyphenyl)-lH-imidazol-4- ylamino)pyrrolo[l,2-f][l,2,4]triazin-2-yl)pyrrolidin-2-yl)methanol (101c) (12 mg, 11 percent yield) as a white solid; MR (300 MHz, DMSO-^e) delta 10.47 (s, 1H, D20 exchangeable), 8.24 (d, J = 1.5 Hz, 1H), 7.97 (s, 1H), 7.10 (d, J= 4.4 Hz, 1H), 6.96 (s, 2H), 6.37 (d, J = 4.4 Hz, 1H), 4.67 (s, 2H), 4.32 – 4.09 (m, 1H), 3.88 (s, 6H), 3.79 – 3.70 (m, 1H), 3.68 (s, 3H), 3.67 – 3.52 (m, 1H), 3.53 – 3.20 (m, 2H), 2.14 – 1.75 (m, 4H); MS (ES+): 496.5 (M+l), 518.5 (M+Na); MS (ES-): 494.4 (M-l).
As the rapid development of chemical substances, we look forward to future research findings about 4570-41-6
Reference£º
Patent; BIOCRYST PHARMACEUTICALS, INC.; KOTIAN, Pravin, L.; BABU, Yarlagadda, S.; KUMAR, V., Satish; ZHANG, Weihe; LU, Peng-Cheng; RAMAN, Krishnan; (747 pag.)WO2018/232094; (2018); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem