Triphenylphosphine → ethyl{(1S)-5-[2-(6-chloro-2-pyridinyl)ethoxy]-2,3-dihydro-1H-inden-1-yl}acetate

To a solution of 2-(6-chloro-2-pyridinyl)ethanol (Example 470, 250 mg, 1.59 mmol) and ethyl [(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate (Example 6, 698 mg, 3.17 mmol) in THF (4 mL) were added PPh3 (832 mg, 3.17 mmol) and DIAD (641 mg, 3.17 mmol). The reaction mixture was vigorously stirred at rt for 24 h, concentrated under reduced pressure, and the residue was purified by silica gel chromatography (6:1 hexanes/EtOAc) to give the product (170 mg, 30%). 1H NMR (400 MHz, CDCl3) δ 1.28 (t, 3H), 1.72-1.77 (m, 1H), 2.34-2.43 (m, 2H), 2.71 (dd, 1H), 2.81-2.89 (m, 2H), 3.21 (t, 2H), 3.51-3.52 (m, 1H), 4.17 (q, 2H), 4.31 (t, 2H), 6.69 (d, 1H), 6.76 (s, 1H), 7.04 (d, 1H), 7.19 (dd, 2H), 7.57 (t, 1H).

1. concentrationconcentrated under reduced pressure
2. customthe residue was purified by silica gel chromatography (6:1 hexanes/EtOAc)

ORDレコード

ord-903fe1fe5807483ba3dea00ed0842734

出典データセット

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US07906653B2