Cyclopropylamine → (+/-)-9-(3-Cyclopropylcarbamoyl-3-hydroxy-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene-2-carboxylic acid amide

HRID 575082Notes

Reaction equation

[C:1]([C:4]1[N:5]=[C:6]2[N:16]([CH:17]=1)[CH2:15][CH2:14][O:13][C:12]1[C:7]2=[CH:8][C:9]([C:19]#[C:20][C:21]([OH:27])([CH3:26])[C:22]([O:24]C)=O)=[C:10]([F:18])[CH:11]=1)(=[O:3])[NH2:2].[CH:28]1([NH2:31])[CH2:30][CH2:29]1>CO>[CH:28]1([NH:31][C:22]([C:21]([OH:27])([CH3:26])[C:20]#[C:19][C:9]2[C:10]([F:18])=[CH:11][C:12]3[O:13][CH2:14][CH2:15][N:16]4[C:6](=[N:5][C:4]([C:1]([NH2:2])=[O:3])=[CH:17]4)[C:7]=3[CH:8]=2)=[O:24])[CH2:30][CH2:29]1

Participants

Conditions

Temperature: 40 °C

Procedure

Into a 8-mL vial, was placed a solution of methyl 4-[4-carbamoyl-12-fluoro-9-oxa-3,6-diazatricyclo[8.4.0.0[2,6]]tetradeca-1(14),2,4,10,12-pentaen-13-yl]-2-hydroxy-2-methylbut-3-ynoate (120 mg, 0.32 mmol, 1.00 equiv) and cyclopropanamine (1.83 g, 32.05 mmol, 99.72 equiv) in methanol (2 mL). The resulting solution was stirred for 12 h at 40° C. in an oil bath and concentrated under vacuum. The residue was applied onto a silica gel column with dichloromethane/methanol (30:1). This resulted in 23 mg (18%) of 9-(3-Cyclopropylcarbamoyl-3-hydroxy-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene-2-carboxylic acid amide as a yellow solid. LC-MS: (ES, m/z): 399 [M+H]+; 1H-NMR: (300 MHz, DMSO-d6, ppm): δ 8.558 (d, 1H), 7.892 (d, 1H), 7.782 (s, 1H), 7.575 (br s, 1H), 7.126 (br s, 1H), 7.023 (d, 1H), 6.510 (s, 1H), 4.600-4.400 (m, 4H), 2.800-2.600 (m, 1H), 1.600 (s, 3H), 0.633-0565 (m, 4H).

Workup

concentrationconcentrated under vacuum
customThis resulted in 23 mg (18%) of 9-(3-Cyclopropylcarbamoyl-3-hydroxy-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene-2-carboxylic acid amide as a yellow solid

Sources & evidence

ORD record: ord-70114d41b95a426bbef4270b48f5a1b0
Source dataset: uspto-grants-2015_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09034866B2

Reaction notes

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