تفاعل #89724

معادلة التفاعل

1-tert-butyl 3-methyl(2S,3S,5R)-5-hydroxy-2-[(4-phenyl-3,6-dihydropyridin-1(2H)-yl)carbonyl]piperidine-1,3-dicarboxylate

tetrahydrofuran

4-pyridinol

triphenylphosphine

diisopropyl azodicarboxylate

→

1-tert-butyl 3-methyl(2S,3S,5S)-2-[(4-phenyl-3,6-dihydropyridin-1(2H)-yl)carbonyl]-5-(pyridin-4-yloxy)piperidine-1,3-dicarboxylate

ظروف التفاعل

المعالجة

1. 1
   تركيزAfter concentrated
2. 2
   أخرىto dry
3. 3
   أخرىthe mixture was purified on silica gel
4. 4
   غسيلeluting with 0 to 40% EtOAc in hexane
5. 5
   أخرىto afford the desired ether compound (56 mg, 50%)

الإجراء التجريبي

To a solution of 1-tert-butyl 3-methyl(2S,3S,5R)-5-hydroxy-2-[(4-phenyl-3,6-dihydropyridin-1(2H)-yl)carbonyl]piperidine-1,3-dicarboxylate (100 mg, 0.0002 mol) in tetrahydrofuran (0.912 mL, 0.0112 mol) was added 4-pyridinol (25.7 mg, 0.000270 mol), triphenylphosphine (70.8 mg, 0.000270 mol), followed by diisopropyl azodicarboxylate (0.0532 mL, 0.000270 mol). The mixture was heated at 70 Celsius overnight. After concentrated to dry, the mixture was purified on silica gel, eluting with 0 to 40% EtOAc in hexane, to afford the desired ether compound (56 mg, 50%). MS (ESI): (M+H)+=522.1.

المصدر