1,1-Dimethylethyl 5-amino-1H-indazole-1-carboxylate → tert-butyl 5-(6-acetoxy-2-[(3-phenyl)phenyl)-7-methoxyquinazolin-4-ylamino)-1H-indazole-1-carboxylate

HRID 61617Notes

Reaction equation

[C:1]([O:4][C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][CH3:16])[N:11]=[C:10]([C:17]1[CH:22]=[CH:21][CH:20]=[C:19]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[CH:18]=1)[N:9]=[C:8]2Cl)(=[O:3])[CH3:2].[NH2:30][C:31]1[CH:32]=[C:33]2[C:37](=[CH:38][CH:39]=1)[N:36]([C:40]([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])=[O:41])[N:35]=[CH:34]2>C(O)(C)C>[C:1]([O:4][C:5]1[CH:6]=[C:7]2[C:12](=[CH:13][C:14]=1[O:15][CH3:16])[N:11]=[C:10]([C:17]1[CH:22]=[CH:21][CH:20]=[C:19]([C:23]3[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=3)[CH:18]=1)[N:9]=[C:8]2[NH:30][C:31]1[CH:32]=[C:33]2[C:37](=[CH:38][CH:39]=1)[N:36]([C:40]([O:42][C:43]([CH3:46])([CH3:45])[CH3:44])=[O:41])[N:35]=[CH:34]2)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: 95 °C

Procedure

A mixture of 4-chloro-2-[(3-phenyl)phenyl]-7-methoxyquinazolin-6-yl acetate (4.00 g, 9.88 mmole), tert-butyl 5-amino-1H-indazole-1-carboxylate (2.42 g, 10.37 mmole) in iso-propanol (130 mL) was stirred at 95° C. for 2 h. The reaction was cooled to RT and the crude product was filtered and then washed with ether, iso-propanol, and hexane and dried under vacuum to give tert-butyl 5-(6-acetoxy-2-[(3-phenyl)phenyl)-7-methoxyquinazolin-4-ylamino)-1H-indazole-1-carboxylate (4.33 g, 7.20 mmole, 77% over two steps). MS 602 (M+1). HPLC retention time 6.47 mins.

Workup

temperatureThe reaction was cooled to RT
filtrationthe crude product was filtered
washwashed with ether, iso-propanol, and hexane
customdried under vacuum

Sources & evidence

ORD record: ord-4bfc83fd8a0a400983cfc36000ad93fb
Source dataset: uspto-grants-2016_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09440961B2

Reaction notes

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