1-(Methylsulfonyl)piperazine → US9730937, Example 32

Participants

Reaction Steps

In the manner described in Example 30 (1-(5-tert-butyl-isoxazol-3-yl)-3-{3-[7-(3-chloro-propoxy)-6-methoxy-quinazolin-4-yloxy]-phenyl}-urea from Example 27B (225 mg, 0.427 mmol) was reacted with 1-methanesulfonyl-piperazine (140.2 mg, 0.854 mmol) to yield 1-(5-tert-butylisoxazol-3-yl)-3-(3-(6-methoxy-7-(3-(4-(methyl sulfonyl)piperazin-1-yl)propoxy)quinazolin-4-yloxy)phenyl)urea (51 mg, 18%) as a white solid. 1H NMR (300 MHz, DMSO-d6) δ 9.70 (s, 1H), 9.05 (s, 1H), 8.55 (s, 1H), 7.58 (d, 2H), 7.35 (m, 2H), 7.22 (d, 1H), 6.95 (d, 1H), 6.45 (s, 1H), 4.25 (m, 2H), 3.98 (s, 3H), 3.15 (m, 5H), 2.88 (s, 4H), 2.55 (m, 4H), 2.00 (m, 2H), 1.25 (s, 9H); LC-MS (ESI) m/z 654 (M+H)+.

Provenance & Evidence