1.1R:NaOH, S:THF, 8 h, reflux; cooled; overnight, rt
1.2R:HCl, S:H2O, S:AcOEt, rt
2.1S:108-21-4, S:THF, S:CH2Cl2, reflux
2.2S:108-21-4, reflux
3.1R:HCl, S:H2O
4.1R:Cl(O=)CC(=O)Cl, C:HNO3, S:THF, rt; rt → reflux
4.2S:PhMe, reflux
4.3R:Et3N, C:4-DMAP, S:CH2Cl2, overnight, rt
4.4S:H2O, rt

3003949364 






