2-(Tributylstannyl)-1,3-thiazole → tert-butyl (1S,2S,4S)-4-amino-1-benzyl-2-{[tert-butyl(dimethyl)silyl]oxy}-5-[4-(1,3-thiazol-2-yl)phenyl]pentylcarbamate

To a solution containing the product from Example 92D (0.050 g, 0.070 mmol) in N,N-dimethylformamide (1.8 mL) were added silver(I) oxide (0.016 g, 0.070 mmol), tetrakis(triphenylphosphine)palladium (0.004 g, 0.003 mmol), and 2-tributylstannylthiazole (0.126 g, 0.337 mmol), and the mixture was irradiated at 60 W in a microwave (internal temperature reached 100° C.) for 2 minutes. The mixture was then irradiated at 200 W in a microwave (internal temperature reached 100° C.) for 4 minutes The reaction was cooled, diluted with chloroform and washed with dilute NaHCO3, and brine, dried over MgSO4, filtered and concentrated. The residue was chromatographed on silica gel eluting with 30% methanol in chloroform containing 0.2% ammonium hydroxide to give the title compound (0.053 g).

1. customthe mixture was irradiated at 60 W in a microwave (internal temperature reached 100° C.) for 2 minutes
2. customThe mixture was then irradiated at 200 W in a microwave (internal temperature reached 100° C.) for 4 minutes The reaction
3. temperaturewas cooled
4. washwashed with dilute NaHCO3, and brine
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. customThe residue was chromatographed on silica gel eluting with 30% methanol in chloroform containing 0.2% ammonium hydroxide

ORD-Eintrag

ord-0f6272844de2443595070a86730e2e17

Quelldatensatz

uspto-grants-2010_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07834043B2