4-Methylmorpholine → (R)-2-{3-fluoro-4-[(6-fluoro-1H-indazole-3-carbonyl)-amino]-phenyl}-morpholine-4-carboxylic acid tert-butyl ester

HRID 571811Notes

Reaction equation

[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][O:11][C@H:10]([C:14]2[CH:19]=[CH:18][C:17]([NH2:20])=[C:16]([F:21])[CH:15]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].CN1CCOCC1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.[F:51][C:52]1[CH:60]=[C:59]2[C:55]([C:56]([C:61](O)=[O:62])=[N:57][NH:58]2)=[CH:54][CH:53]=1>C1COCC1.CN(C=O)C>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][O:11][C@H:10]([C:14]2[CH:19]=[CH:18][C:17]([NH:20][C:61]([C:56]3[C:55]4[C:59](=[CH:60][C:52]([F:51])=[CH:53][CH:54]=4)[NH:58][N:57]=3)=[O:62])=[C:16]([F:21])[CH:15]=2)[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

Conditions

Temperature: 50 °C

Procedure

To a stirred suspension of (+)-(R)-2-(4-amino-3-fluoro-phenyl)-morpholine-4-carboxylic acid tert-butyl ester (40 mg) in THF (6 ml) and DMF (2 ml) were added sequentially N-methylmorpholine (0.12 ml), TBTU (128 mg) and 6-fluoro-1H-indazole-3-carboxylic acid (47 mg, CAS 129295-30-3) and the mixture was heated at 50° C. for 24 h and then at 60° C. for 18 h. The mixture was then concentrated in vacuo and the residue was purified by column chromatography (SiO2; gradient: heptane/EtOAc) to give (R)-2-{3-fluoro-4-[(6-fluoro-1H-indazole-3-carbonyl)-amino]-phenyl}-morpholine-4-carboxylic acid tert-butyl ester (15 mg, 24%) as a white solid. MS (ISP): 476.1 ([M+NH4]+), 459.1 ([M+H]+), 403.1 ([M+H—C4H8]+).

Workup

concentrationThe mixture was then concentrated in vacuo
customthe residue was purified by column chromatography (SiO2; gradient: heptane/EtOAc)

Sources & evidence

ORD record: ord-c3da2a9ad185413fa7aac84f23114151
Source dataset: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09029370B2

Reaction notes

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