Trimethylaluminum → tert-Butyl 2-(6-(8-chloro-4-methyl-1-oxopyrrolo[3,4-b]indol-2(1H,3H,4H)-yl)-1H-indol-1-yl)acetate

Temperature

25 °C

Methyl 2-((1-(2-tert-butoxy-2-oxoethyl)-1H-indol-6-ylamino)methyl)-4-chloro-1-methyl-1H-indole-3-carboxylate (2.416 mmol, 1 equiv.) was dissolved in dichloromethane (36 ml), and (CH3)3Al (2 M solution in toluene, 4.83 mmol) was added at 0° C., under nitrogen. After 10 min, the reaction mixture was heated to 25° C. and then stirred for 2 h. The reaction mixture was diluted with dichloromethane and hydrolysed with 2 M HCl. The phases were separated, and the organic phase was washed with water and sat. NaCl solution (in each case 10 ml). Drying over Na2SO4 was then carried out, followed by concentration under reduced pressure. The product was crystallized from ethyl acetate. Yield: 89%

1. customThe phases were separated
2. washthe organic phase was washed with water and sat. NaCl solution (in each case 10 ml)
3. dry with materialDrying over Na2SO4
4. concentrationfollowed by concentration under reduced pressure
5. customThe product was crystallized from ethyl acetate

ORD record

ord-28c1b47fff0444c5bf8389b996d73246

Source dataset

uspto-grants-2013_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08492559B2