4-Aminophenol → 4-(4-(4-Methoxyphenyl)phthalazin-1-ylamino)phenol hydrochloride

HRID 503528Notes

Reaction equation

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=1.[Cl:9][C:10]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][CH:18]=2)[C:13]([C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)=[N:12][N:11]=1.C(O)(CC)C>C(OCC)C>[ClH:9].[CH3:27][O:26][C:23]1[CH:22]=[CH:21][C:20]([C:13]2[C:14]3[C:19](=[CH:18][CH:17]=[CH:16][CH:15]=3)[C:10]([NH:1][C:2]3[CH:7]=[CH:6][C:5]([OH:8])=[CH:4][CH:3]=3)=[N:11][N:12]=2)=[CH:25][CH:24]=1

Participants

Conditions

Temperature: 100 °C

Procedure

4-Aminophenol (340 mg, 3.1 mmol), 1-chloro-4-(4-methoxyphenyl)phthalazine (837 mg, 3.1 mmol), and sec-butanol (12 mL, 3.1 mmol) were combined in a resealable tube and heated to 100° C. overnight. The reaction progress was monitored by LCMS, and upon completion, the orange reaction was cooled diluted with diethyl ether. The resulting precipitate was filtered and washed with diethyl ether, and the solid was dried in vacuo to provide 4-(4-(4-methoxyphenyl)phthalazin-1-ylamino)phenol hydrochloride (1.17 g, 100% yield) as an orange solid. MS [M+H]=344.0. Calc'd for C19H21N5O: 343.13.

Workup

customupon completion, the orange reaction
temperaturewas cooled
filtrationThe resulting precipitate was filtered
washwashed with diethyl ether
customthe solid was dried in vacuo

Sources & evidence

ORD record: ord-cb85eb13a3ee49cfaa0b3d81aa17c7b7
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07776857B2

Reaction notes

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