Triphenylphosphine → ethyl ((1S)-5-{3-[(2,5-dichloro-4-pyrimidinyl)amino]propoxy}-2,3-dihydro-1H-inden-1-yl)acetate

Participants

Reaction Steps

To a solution of 3-[(2-chloro-5-chloro-4-pyrimidinyl)amino]-1-propanol (Example 440, 1.08 g, 4.90 mmol) and ethyl[(1S)-5-hydroxy-2,3-dihydro-1H-inden-1-yl]acetate (Example 6, 539 mg, 2.45 mmol) in THF (40 mL) were added PPh3 (1.29 g, 4.90 mmol) and ADDP (1.26 g, 4.90 mmol). The reaction mixture was vigorously stirred at rt for 72 h, after which additional amounts of PPh3 (1.29 g, 4.90 mmol) and ADDP (1.26 g, 4.90 mmol) were added. After stirring for an additional 24 h, the reaction mixture was diluted with hexanes, filtered through Celite® and the filtrate concentrated under reduced pressure. The residue was then purified by silica gel chromatography (1:1 hexanes/EtOAc) to give the product (920 mg, 89%). 1H NMR (400 MHz, CDCl3): δ 1.29 (t, 3H), 1.71-1.82 (m, 1H), 2.15 (qt, 2H), 2.35-2.47 (m, 2H), 2.72 (dd, 1H), 2.79-2.98 (m, 2H), 3.48-3.58 (m, 1H), 3.74 (q, 2H), 4.12 (t, 2H), 4.18 (q, 2H), 6.22-6.31 (b, 1H), 6.73 (dd, 1H), 6.79 (d, 1H), 7.08 (d, 1H), 7.25 (s, 1H).

Provenance & Evidence