反应详情

Title compound was prepared according to the procedure described in: Hasnik, Z.; Silhar, P.; Hocek, M. Synlett 2008, 4, 543. A solution of (benzoyloxymethyl)zinc(II) iodide Part B (2.17 mL, 1.949 mmol) was added to a solution of 2-bromo-5-chloropyridine (125 mg, 0.650 mmol) and Pd(PPh3)4 (37.5 mg, 0.032 mmol) in THF (1.30 mL). The reaction mixture was stirred at RT for 5 h at which point it was quenched with 1M NaH2PO4 (30 mL) The solid formed was filtered and washed well with water. The filtrate was extracted with DCM (3×25 mL) and the combined organic layers were dried over anhydrous Na2SO4 and concentrated. The crude product was subjected to flash chromatography (silica gel/hexanes-EtOAc 100:0 to 50:50 gradient) to afford (5-chloropyridin-2-yl)methyl benzoate 16C (101 mg, 63% yield) as an off-white solid. LC-MS, [M+H]+=248. HPLC-Method 8; 3.30 min.

1. customTitle compound was prepared
2. customwas quenched with 1M NaH2PO4 (30 mL) The solid
3. customformed
4. filtrationwas filtered
5. washwashed well with water
6. extractionThe filtrate was extracted with DCM (3×25 mL)
7. dry with materialthe combined organic layers were dried over anhydrous Na2SO4
8. concentrationconcentrated