1,2,3,4-Tetrahydro-2-naphthalenol → 5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)-1-(1,2,3,4-tetrahydronaphthalen-2-yl)pyridazin-4(1H)-one

HRID 1747811Notes

Reaction equation

[CH3:1][O:2][C:3]1[C:4]([OH:20])=[C:5]([C:9]2[N:13]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:12]=[CH:11][CH:10]=2)[N:6]=[N:7][CH:8]=1.[CH2:21]1[C:30]2[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=2)[CH2:24][CH2:23][CH:22]1O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.CC(OC(/N=N/C(OC(C)C)=O)=O)C.C1(C)C=CC=CC=1>C1(C)C=CC=CC=1>[CH3:1][O:2][C:3]1[C:4](=[O:20])[C:5]([C:9]2[N:13]([C:14]3[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=3)[N:12]=[CH:11][CH:10]=2)=[N:6][N:7]([CH:27]2[CH2:28][CH2:29][C:30]3[C:25](=[CH:24][CH:23]=[CH:22][CH:21]=3)[CH2:26]2)[CH:8]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a mixture of 5-methoxy-3-(1-phenyl-1H-pyrazol-5-yl)pyridazin-4-ol (0.10 g), 1,2,3,4-tetrahydronaphthalen-2-ol (0.17 g), triphenylphosphine (0.29 g) and toluene was added DIAD toluene solution (1.9M, 0.59 mL) at 50° C., and the mixture was stirred at 50° C. for 1 hr and at room temperature overnight. The solvent was evaporated under reduced pressure, and the obtained residue was purified by silica gel column chromatography (methanol/ethyl acetate) and recrystallized from ethyl acetate/n-heptane to give the title compound (27 mg).

Workup

customThe solvent was evaporated under reduced pressure
customthe obtained residue was purified by silica gel column chromatography (methanol/ethyl acetate)
customrecrystallized from ethyl acetate/n-heptane

Sources & evidence

ORD record: ord-bd3d95b98b104f9f862492165ed51152
Source dataset: uspto-grants-2015_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09150588B2

Reaction notes

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