(1E,4E)-2-amino-8-bromo-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamide → HCID 50943538, compound

HRID 2275734Notes

Reaction equation

HRID 2275734 reaction equation
[NH2:1][C:2]1[CH2:3][C:4]([C:14]([N:16]([CH2:20][CH2:21][CH3:22])[CH2:17][CH2:18][CH3:19])=[O:15])=[CH:5][C:6]2[CH:12]=[CH:11][C:10](Br)=[CH:9][C:7]=2[N:8]=1.CC1(C)C(C)(C)OB([C:31]2[CH:36]=[CH:35][C:34]([CH:37]3[CH2:41][O:40][C:39](=[O:42])[O:38]3)=[CH:33][CH:32]=2)O1>>[NH2:1][C:2]1[CH2:3][C:4]([C:14]([N:16]([CH2:20][CH2:21][CH3:22])[CH2:17][CH2:18][CH3:19])=[O:15])=[CH:5][C:6]2[CH:12]=[CH:11][C:10]([C:31]3[CH:32]=[CH:33][C:34]([CH:37]4[CH2:41][O:40][C:39](=[O:42])[O:38]4)=[CH:35][CH:36]=3)=[CH:9][C:7]=2[N:8]=1

Participants

3

Reactant 2

HCID 66961446(1E,4E)-2-amino-8-bromo-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamideHCID 66961977HCID 66961977, compound

Product 1

HCID 50943538HCID 50943538, compoundYield 9%

Procedure

Reaction of (1E,4E)-2-amino-8-bromo-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamide and 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-1,3-dioxolan-2-one as follows yielded (1E,4E)-2-amino-8-(4-(2-oxo-1,3-dioxolan-4-yl)phenyl)-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamide (9%). (1E,4E)-2-amino-8-bromo-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamide (75.0 mgs, 0.206 mmol), 4-(methoxycarbonyl)phenylboronic acid (55.6 mgs, 0.309 mmol, tetrakis(triphenylphosphine)palladium(0) (23.8 mgs, 0.021 mmol), 2M aqueous potassium carbonate (0.309 ml, 0.618 mmol) were combined in 2 mls of acetonitrile in a microwave reaction vial. This mixture was heated in a microwave to 100° C. for 30 minutes. The mixture was then diluted with EtOAc, washed twice with brine, dried over sodium sulfate, and concentrated under reduced pressure. Preparative thin layer chromatography (2×0.5 mm plates, 7% MeOH/DCM) was then used. 1H NMR (400 MHz, DMSO-d6) δ 7.74-7.80 (m, 2H), 7.55-7.60 (m, 2H), 7.26-7.42 (m, 3H), 6.78 (s, 1H), 5.89-5.96 (m, 1H), 4.88-4.95 (m, 1H), 4.45-4.52 (m, 1H), 2.78 (s, 2H), 1.50-1.63 (m, 4H), 0.71-0.93 (m, 6H); m/z (APCI-pos) M+1=448.2. (1E,4E)-2-amino-8-(4-(1,2-dihydroxyethyl)phenyl)-N,N-dipropyl-3H-benzo[b]azepine-4-carboxamide (19%) was obtained as the more polar product. (19%). 1H NMR (400 MHz, DMSO-d6) δ 7.59-7.64 (m, 2H), 7.39-7.44 (m, 2H), 7.33-7.38 (m, 1H), 7.26-7.28 (m, 1H), 7.20-7.24 (m, 1H), 6.84 (br s, 1H), 6.74 (s, 1H), 5.23-5.27 (m, 1H), 4.71-4.75 (m, 1H), 4.54-4.62 (m, 1H), 3.44-3.50 (m, 2H), 3.28-3.35 (m, 4H), 2.74 (s, 2H), 1.51-1.61 (m, 4H), 0.73-0.90 (m, 6H); m/z (APCI-pos) M+1=422.2.

Sources & evidence

ORD record
ord-1441a07fab55456da34909e1997591c7
Source dataset
uspto-grants-2015_09
Patent number
US09126940B2

Reaction notes

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