Reference of 19500-02-8,Some common heterocyclic compound, 19500-02-8, name is 3-Methoxy-2-methylaniline, molecular formula is C8H11NO, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
A stirred solution of amine 2 (42.58 g, 0.31 mol) and di-tert-butyl dicarbonate (65.48 g, 0.30 mol) in THF (300 mL) was heated to maintain reflux for 4 h. After cooling to RT, the reaction mixture was concentrated under reduced pressure and the residue was dissolved in EtOAc (500 mL). The resultant solution was washed with 0.5 M citric acid (2.x.100 mL), water (100 mL), saturated aqueous NaHCO3 (200 mL), brine (200 mL) and dried over MgSO4. After filtration and removal of the solvent from the filtrate, the residue (red oil, 73.6 g) was dissolved in hexanes (500 mL) and filtered through a pad of Silica Gel (for TLC). The filtrate was evaporated under reduced pressure to provide N-Boc aniline 3 as a yellow solid. Yield: 68.1 g (96percent).
The synthetic route of 19500-02-8 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Chang, Han-Ting; Charmot, Dominique; Glinka, Tomasz; Cope, Michael James; Goka, Elizabeth; Shao, Jun; Cartigny, Damien; Chen, Shiah-yun; Buysse, Jerry M.; US2007/135385; (2007); A1;,
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