反应详情

Tris(dibenzylideneacetone)dipalladium (141 mg, 0.154 mM) and triphenylarsine (188 mg, 0.616 mM) were dissolved in degassed N-methylpyrrolidone (40 ml) under nitrogen, and stirred for 15 minutes. (5RS)-3-(3-Fluoro-4-iodophenyl)-5-(N-(t-butoxycarbonyl)isoxazol-3-ylaminomethyl)-4,5-dihydro-isoxazole (1.5 g, 3.08 mM) and 1-t-butoxycarbonyl-4-trimethylstannyl-1,2,5,6-tetrahydropyridine (1.99 g, 4.62 mM) were added, and the reaction heated at 70–80° for 18 hours. The mixture was filtered through celite and evaporated to dryness, and the residue chromatographed on a 40 g silica Biotage column, eluting with 25% ethyl acetate in isohexane. Relevant fractions were combined to give the desired product (817 mg).

1. temperaturethe reaction heated at 70–80° for 18 hours
2. filtrationThe mixture was filtered through celite
3. customevaporated to dryness
4. customthe residue chromatographed on a 40 g silica Biotage column
5. washeluting with 25% ethyl acetate in isohexane