Acetic Acid → HCID 178464471, compound

HRID 931278Notes

Reaction equation

[NH2:1][C:2]1[CH:3]=[CH:4][C:5]([N:9]2[CH2:14][CH2:13][CH2:12][C@@H:11]([C:15]([N:17]([CH2:19][CH3:20])[CH3:18])=[O:16])[CH2:10]2)=[N:6][C:7]=1[NH2:8].[CH:21]1([C:24]2[N:29]=[C:28]([CH:30]=O)[CH:27]=[CH:26][N:25]=2)[CH2:23][CH2:22]1.[S].C(O)(=O)C>C(O)C>[CH:21]1([C:24]2[N:29]=[C:28]([C:30]3[NH:8][C:7]4=[N:6][C:5]([N:9]5[CH2:14][CH2:13][CH2:12][C@@H:11]([C:15]([N:17]([CH2:19][CH3:20])[CH3:18])=[O:16])[CH2:10]5)=[CH:4][CH:3]=[C:2]4[N:1]=3)[CH:27]=[CH:26][N:25]=2)[CH2:23][CH2:22]1

Participants

Conditions

Temperature: 80 °C

Procedure

To a solution of (R)-1-(5,6-diaminopyridin-2-yl)-N-ethyl-N-methylpiperidine-3-carboxamide (200 mg, 0.722 mmol) in ethanol (10 mL) was added 2-cyclopropylpyrimidine-4-carbaldehyde (106 mg, 0.722 mmol), sulfur powder (69 mg, 2.16 mmol), and acetic acid (0.2 mL). The reaction mixture was heated to 80° C. for 18 h. The solvent was evaporated and the residue was partitioned between ethyl acetate and water. The organic layer was concentrated under reduced pressure. The crude material was purified via preparative HPLC to afford the title compound (40 mg, 13.5%). 1H NMR (300 MHz, CDCl3) δ 1.09-1.18 (m, 3H), 1.19-1.31 (m, 4H), 1.65-1.73 (m, 1H), 1.84 (d, 1H), 1.88-1.98 (m, 2H), 2.31 (d, 1H), 2.69-2.87 (m, 1H), 2.99 (br s, 1H), 3.03 (br s, 1H), 3.11 (br s, 1H), 3.14-3.27 (m, 1H), 3.37-3.57 (m, 2H), 4.37 (d, 1H), 4.45-4.59 (m, 1H), 6.76 (d, 1H), 7.79-7.96 (m, 1H), 8.67 (d, 1H), 10.25 (br s, 1H). MS (ES+APCI) (M+H) 406.3; LCMS retention time 3.055 min (Method U1).

Workup

customThe solvent was evaporated
customthe residue was partitioned between ethyl acetate and water
concentrationThe organic layer was concentrated under reduced pressure
customThe crude material was purified via preparative HPLC

Sources & evidence

ORD record: ord-13a37c04f9b54c07990faffacbe54a47
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296745B2

Reaction notes

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