2-Hydroxy-gamma-butyrolactone, (2S)- → (2S)-N-{2-[(4-{[3-Chloro-4-(pyridin-2-ylmethoxy)phenyl]amino}quinazolin-5-yl)oxy]ethyl}-2,4-dihydroxybutanamide

Participants

Reaction Conditions

Reaction Steps

5-(2-aminoethoxy)-N-[3-chloro-4-(pyridin-2-ylmethoxy)phenyl]quinazolin-4-amine (obtained as described in Example 2.6, preparation of starting materials, 0.5 g, 1.19 mmol) was heated to 130° C. in xylene (20 ml) until it had dissolved. (S)-(−)-α-hydroxy-γ-butyrolactone (0.10 ml, 1.31 mmol) was added and the mixture was stirred at 130° C. for 3 hours. More (S)-(−)-α-hydroxy-γ-butyrolactone (0.05 ml, 0.66 mmol) was added and the mixture was heated for a further 2 hours. The resultant precipitate was filtered off while the mixture was hot, washed with diethyl ether (3×10 ml) and dried to give the title compound as a solid (430 mg, 69%); NMR spectrum (DMSO-d6) 1.38-1.55 (m, 1H), 1.69-1.85 (m, 1H), 3.37-3.50 (m, 2H), 3.61-3.77 (m, 2H), 3.89-4.00 (m, 1H), 4.28-4.45 (m, 3H), 5.29 (s, 2H), 5.51 (d, 1H), 7.13 (d, 1H), 7.22 (d, 1H), 7.28-7.41 (m, 2H), 7.49-7.62 (m, 2H), 7.71 (t, 1H), 8.01 (d, 1H), 8.14-8.25 (m, 1H), 8.45 (s, 1H), 8.59 (d, 1H), 9.82 (s, 1H); Mass spectrum MH+ 523.9.

Provenance & Evidence