2-(Tributylstannyl)pyridine → HCID 66844763、化合物
反応式
Br[C:2]1[C:3]([O:12][CH:13]2[CH2:17][CH2:16][CH2:15][CH2:14]2)=[N:4][CH:5]=[C:6]([CH:11]=1)[C:7]([O:9][CH3:10])=[O:8].C([Sn](CCCC)(CCCC)[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=1)CCC>CN(C=O)C>[CH:13]1([O:12][C:3]2[C:2]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][N:24]=3)=[CH:11][C:6]([C:7]([O:9][CH3:10])=[O:8])=[CH:5][N:4]=2)[CH2:17][CH2:16][CH2:15][CH2:14]1参加物
4
実験手順
A solution of methyl 5-bromo-6-(cyclopentyloxy)nicotinate (4.53 g, 15.1 mmol) and 2-(tributylstannyl)pyridine (5.00 g, 13.6 mmol) was stirred in 100 mL of DMF at 120° C. for 6 h. The resulting solution was cooled and concentrated in vacuo. The crude reaction mixture was then partitioned between EtOAc and water. The layers were separated and the aqueous layer was extracted 1×EtOAc. The organic phases were combined, washed 3× brine, dried over MgSO4, filtered and concentrated under reduced pressure. The residue was taken up in CH2Cl2 and loaded on to a 40 g pre-packed silica gel column. Elution with 0-30% EtOAc:hexanes provided the title compound as an off-white powder (1.71 g, 38%). MS m/z: 299 (M+1).