Lithium → N-methyl-2-phenoxyaniline

Temperatur

65 °C

To a solution of 2-phenoxy-N-(t-butoxycarbonyl)aniline (1.43 g, 5.0 mmol) in anhydrous tetrahydrofuran (50 ml) was added lithium aluminumhydride (10 ml, 10.0 mmol, 1.0 M solution in tetrahydrofuran) at −10° C. The mixture was then refluxed at 65° C. overnight. The reaction mixture was quenched with slow addition of MeOH (10 ml) and concentrated under reduced pressure. The reaction mixture was then poured into water (50 ml) and extracted with ethyl acetate (3×100 ml). Organic extracts were combined and washed with brine (2×100 ml) and dried over (Na2SO4), concentrated under reduced pressure to give N-methyl-2-phenoxyaniline (0.94 g, 94.0%) as a pale yellow oil. The product was confirmed by LC-MS and subjected to next reaction without further purification.

1. customThe reaction mixture was quenched with slow addition of MeOH (10 ml)
2. concentrationconcentrated under reduced pressure
3. additionThe reaction mixture was then poured into water (50 ml)
4. extractionextracted with ethyl acetate (3×100 ml)
5. washwashed with brine (2×100 ml)
6. dry with materialdried over (Na2SO4)
7. concentrationconcentrated under reduced pressure

ORD-Eintrag

ord-57661183dc00426484efe06d0b3c6b81

Quelldatensatz

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08063081B2