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

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Reaction Steps

To a solution of 3-{[6-chloro-3-(trifluoromethyl)-2-pyridinyl]amino}-1-propanol (Example 302) (0.63 g, 2.45 mmol) and ethyl [(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate (Example 6, 0.45 g, 2.05 mmol) in THF (6.80 mL) was added triphenylphosphine (0.70 g, 2.66 mmol) and 1,1′-(azodicarbonyl)-dipiperidine (0.68 g, 2.66 mmol) under argon. The golden yellow mixture was stirred at rt for 18 h, and then concentrated under reduced pressure. The product (0.58 g, 62%) was isolated after column chromatography (2:1 hexanes/EtOAc). 1H NMR (400 MHz, CD3OD) δ 7.65 (d, 1H), 7.02 (d, 1H), 6.76 (d, 1H), 6.69 (dd, 1H), 6.60 (d, 1H), 6.48 (b, 1H), 4.15 (q, 2H), 4.04 (t, 2H), 3.65 (q, 2H), 3.46 (qt, 1H), 2.92-2.68 (m, 3H), 2.42-2.30 (m, 2H), 2.08 (qt, 2H), 1.78-1.68 (m, 1H), 1.27 (t, 3H).

Provenance & Evidence