Diisopropylethylamine → N-[3-chloro-4-(pyridin-2-ylmethoxy)phenyl]-7-(5-piperidin-1-ylpent-2-ynoyl)-5,6,7,8-tetrahydropyrido[4',3':4,5]-thieno[2,3-d]pyrimidin-4-amine

Participants

Reaction Steps

To a suspension of [3-Chloro-4-(pyridin-2-ylmethoxy)-phenyl]-(5,6,7,8-tetrahydro-9-thia-1,3,7-triaza-fluoren-4-yl)amine (0.051 g, 0.00028 mol), 5-Piperidin-1-yl-pent-2-ynoic acid (0.100 g, 0.00023 mol), O-(Benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (0.091 g, 0.00028 mol) in mixture of dichloromethane/tetrahydrofuran (1.2/1.2 ml) was added diisopropylethylamine (0.123 ml, 0.001 mol) slowly over 15 min. The mixture stirred at room temperature for 3 hours. Reaction was judged complete by TLC (Eluent: 10% MeOH/DCM). The reaction mixture was concentrated to dryness under vacuum, dissolved in MeOH (1.5 ml), filtered and subjected to reverse phase HPLC purification to give the desired product (0.087 g, 62.81%)of the desired product. 1H-NMR (CD2Cl2) δ 8.60 (d, 1H), 8.45 (s, 1H), 7.80 (m, 2H), 7.63 (d, 1H), 7.41 (m, 1H), 7.28 (m, 1H), 7.04 (m, 2H), 5.25 (s, 2H), 4.98 (d, 2H), 4.05 (dd, 2H), 3.10 (d, 2H), 2.60 (m, 4H), 2.40 (m, 4H), 1.62 (m, 4H), 1.45 (m, 2H); LCMS RT=2.37 min; [M+H]+=587.1.

Provenance & Evidence