HCID 646883, compound → HCID 68078649, compound

HRID 1522438Notes

Reaction equation

[CH3:1][C:2]1[CH:6]=[C:5]([NH2:7])[N:4]([CH:8]2[CH2:13][CH2:12][N:11]([CH3:14])[CH2:10][CH2:9]2)[N:3]=1.[CH:15]1([C:18](=O)[CH2:19][C:20](=O)[C:21]([O:23][CH2:24][CH3:25])=[O:22])[CH2:17][CH2:16]1>C1(C)C=CC=CC=1>[CH:15]1([C:18]2[CH:19]=[C:20]([C:21]([O:23][CH2:24][CH3:25])=[O:22])[C:6]3[C:2]([CH3:1])=[N:3][N:4]([CH:8]4[CH2:13][CH2:12][N:11]([CH3:14])[CH2:10][CH2:9]4)[C:5]=3[N:7]=2)[CH2:16][CH2:17]1

Participants

Conditions

Temperature: 70 °C

Procedure

3-Methyl-1-(1-methyl-4-piperidinyl)-1H-pyrazol-5-amine (500 mg, 2.57 mmol) and ethyl 4-cyclopropyl-2,4-dioxobutanoate (474 mg, 2.57 mmol) were suspended in Toluene (10 mL) and heated at 70° C. for 5 h. The solvent was removed in vacuo and the crude residue was purified via silica gel chromatography (eluent: gradient of 0 to 10% MeOH:DCM). The final product was collected as a solid, 0.722 g (76%). LCMS E-S (M+H)=343.1 1H NMR (400 MHz, DMSO-d6) δ ppm 1.03-1.11 (m, 4 H), 1.38 (t, J=7.07 Hz, 3 H), 1.83 (d, J=6.06 Hz, 2 H), 2.12-2.22 (m, 4 H), 2.27 (s, 3 H), 2.35 (m, J=7.83, 7.83, 5.05, 4.80 Hz, 1 H), 2.54 (s, 3 H), 2.94 (d, J=6.57 Hz, 2 H), 4.42 (q, J=7.16 Hz, 2 H), 4.57-4.73 (m, 1 H), 7.46 (s, 1 H).

Workup

customThe solvent was removed in vacuo
customthe crude residue was purified via silica gel chromatography (eluent: gradient of 0 to 10% MeOH:DCM)
customThe final product was collected as a solid, 0.722 g (76%)

Sources & evidence

ORD record: ord-6caf431e3b3042898412ddcf1076dbe9
Source dataset: uspto-grants-2015_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09073924B2

Reaction notes

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