Methanol → HCID 58190476, compound

HRID 1892410Notes

Reaction equation

O=[C:2]1[C:10]2C(=CC=CC=2)C(=O)[N:3]1[O:12][CH2:13][C:14]([NH2:16])=[O:15].O.NN.CO.[N:22]1[C:31]2[C:26](=[CH:27][C:28]([CH2:32][C:33]3[N:37]4[N:38]=[C:39](C(=O)C)[CH:40]=[CH:41][C:36]4=[N:35][N:34]=3)=[CH:29][CH:30]=2)[CH:25]=[CH:24][CH:23]=1>C(O)(=O)C>[N:22]1[C:31]2[C:26](=[CH:27][C:28]([CH2:32][C:33]3[N:37]4[N:38]=[C:39](/[C:2](=[N:3]/[O:12][CH2:13][C:14]([NH2:16])=[O:15])/[CH3:10])[CH:40]=[CH:41][C:36]4=[N:35][N:34]=3)=[CH:29][CH:30]=2)[CH:25]=[CH:24][CH:23]=1

Participants

Conditions

Temperature: 95 °C

Procedure

A microwave tube was charged with 2-(1,3-dioxoisoindolin-2-yloxy)acetamide (intermediate V) (166 mg, 0.76 mmol), hydrazine monohydrate (34.4 mg, 0.69 mmol) and 2 mL of methanol. It was heated at 95° C. for 12 h under microwave irradiation. After cooling, solid was removed by filtration and the solution was concentrated under reduced pressure. The residue was diluted with methanol, then 1-(3-(quinolin-6-ylmethyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)ethanone (41.2) (32 mg, 0.105 mmol) and 0.3 mL of acetic acid were added and the mixture was stirred at 40° C. overnight. After concentration, the residue was purified by prep-HPLC to afford the title compound. 1H-NMR (400 MHz, DMSO-d6) δ ppm 8.86 (dd, 1H), 8.33-8.27 (m, 2H), 7.98-7.95 (m, 2H), 7.78 (dd, 1H), 7.69 (d, 1H), 7.50 (dd, 1H), 7.31 (d, 2H), 4.77 (s, 2H), 4.63 (s, 2H), 2.32 (s, 3H). LCMS (method A): [MH]+=376, tR=4.02 min.

Workup

temperatureAfter cooling
customsolid was removed by filtration
concentrationthe solution was concentrated under reduced pressure
additionThe residue was diluted with methanol
concentrationAfter concentration
customthe residue was purified by prep-HPLC

Sources & evidence

ORD record: ord-2f8cfdcbaaf74db48974029e9110f9d2
Source dataset: uspto-grants-2013_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08507676B2

Reaction notes

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