Azidotrimethylsilane → HCID 178489231, compound

HRID 632649Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[C:10]([O:11][C:12]3[CH:17]=[CH:16][C:15](/[CH:18]=[CH:19]/[C:20]([NH2:22])=O)=[CH:14][CH:13]=3)=[C:9]([C:23]3[CH:28]=[CH:27][C:26]([O:29][CH3:30])=[CH:25][CH:24]=3)[S:8][C:7]=2[CH:31]=1.[Si]([N:36]=[N+:37]=[N-:38])(C)(C)C>COCCOC>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]2[C:10]([O:11][C:12]3[CH:17]=[CH:16][C:15](/[CH:18]=[CH:19]/[C:20]4[NH:22][N:38]=[N:37][N:36]=4)=[CH:14][CH:13]=3)=[C:9]([C:23]3[CH:24]=[CH:25][C:26]([O:29][CH3:30])=[CH:27][CH:28]=3)[S:8][C:7]=2[CH:31]=1

Participants

Conditions

Temperature: 180 °C

Procedure

To a microwave vial, (E)-3-(4-((6-methoxy-2-(4-methoxyphenyl)benzo[b]thiophen-3-yl)oxy)phenyl)acrylamide (75 mg, 0.174 mmol) and Bu2SnO (4.33 mg, 0.02 mmol) were suspended in DME (3 mL). The vial was charged with TMSN3 (0.023 mL, 0.17 mmol) and the reaction was heated for 60 min at 180° C. under microwave irradiation. The reaction mixture was filtered to remove solids and concentrated onto silica gel. The crude material was purified by column chromatography (SiO2, 1-20% MeOH/DCM) to afford (E)-5-(4-((6-methoxy-2-(4-methoxyphenyl)benzo[b]thiophen-3-yl)oxy)styryl)-1H-tetrazole (66 mg, 0.15 mmol, 83% yield) as a white solid. 1H NMR (400 MHz, CD3OD) δ ppm=7.45-7.61 (m, 5 H), 7.32 (d, J=2.02 Hz, 1 H), 7.15 (d, J=9.09 Hz, 1 H), 6.98 (d, J=16.67 Hz, 1 H), 6.86-6.93 (m, 2 H), 6.78-6.86 (m, 3 H), 3.78 (s, 3 H), 3.69 (s, 3 H), LC/MS (m/z. MH+): 457.4.

Workup

filtrationThe reaction mixture was filtered
customto remove solids
concentrationconcentrated onto silica gel
customThe crude material was purified by column chromatography (SiO2, 1-20% MeOH/DCM)

Sources & evidence

ORD record: ord-8c6e50cea81f466db74fc69a7dfd75ef
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09321746B2

Reaction notes

Loading…