Methylamine → (Z)-4-(2-(1-methyl-1H-benzo[d]imidazol-5-yl)-1-(4-(2-(methyl-amino)ethoxy)phenyl)but-1-enyl)phenol

HRID 626245Notes

Reaction equation

Cl[CH2:2][CH2:3][O:4][C:5]1[CH:10]=[CH:9][C:8](/[C:11](/[C:25]2[CH:30]=[CH:29][C:28]([OH:31])=[CH:27][CH:26]=2)=[C:12](\[C:15]2[CH:24]=[CH:23][C:18]3[N:19]([CH3:22])[CH:20]=[N:21][C:17]=3[CH:16]=2)/[CH2:13][CH3:14])=[CH:7][CH:6]=1.[CH3:32][NH2:33]>CO>[CH3:22][N:19]1[C:18]2[CH:23]=[CH:24][C:15](/[C:12](/[CH2:13][CH3:14])=[C:11](/[C:25]3[CH:30]=[CH:29][C:28]([OH:31])=[CH:27][CH:26]=3)\[C:8]3[CH:9]=[CH:10][C:5]([O:4][CH2:3][CH2:2][NH:33][CH3:32])=[CH:6][CH:7]=3)=[CH:16][C:17]=2[N:21]=[CH:20]1

Participants

Conditions

Temperature: 85 °C

Procedure

To a stirred solution of (Z)-4-(1-(4-(2-chloroethoxy)phenyl)-2-(1-methyl-1H-benzo[d]imidazol-5-yl)but-1-enyl)phenol (20 mg, 1.0 eq) in 10 mL MeOH was added 5 mL CH3NH2 (aq) and heated at 85° C. for 72 h. The organic solvent was removed in vacuo, water was added to the residue, and extracted with EtOAc. The extract was dried, concentrated, and purified by column chromatography to give the desired (Z)-product. 1H NMR (400 MHz, CDCl3) δ 7.80 (s, 1H), 7.60 (s, 1H), 7.13 (d, J=8.4 Hz, 1H), 7.08 (d, J=8.4 Hz, 2H), 7.01 (d, J=9.2 Hz, 1H), 6.80 (d, J=8.4 Hz, 2H), 6.75 (d, J=8.8 Hz, 2H), 6.45 (d, J=8.4 Hz, 2H), 3.89 (t, J=5.2 Hz, 2H), 3.80 (s, 3H), 2.88 (t, J=5.2 Hz, 2H), 2.52 (q, J=7.2 Hz, 2H), 2.46 (s, 3H), 0.88 (t, J=7.2 Hz, 3H); m/z=428[M+1]+.

Workup

customThe organic solvent was removed in vacuo, water
additionwas added to the residue
extractionextracted with EtOAc
customThe extract was dried
concentrationconcentrated
custompurified by column chromatography
customto give the desired (Z)-product

Sources & evidence

ORD record: ord-b4b25ad66ad44290ab096fffb6546c33
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09309211B2

Reaction notes

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