Dichloromethane → HCID 58276410, compound

HRID 70334Notes

Reaction equation

[CH3:1][C:2]([CH3:20])([CH3:19])[C:3]([O:5][CH2:6][N:7]1[CH:11]=[N:10][C:9]([C:12]2[CH:17]=[CH:16][C:15](Br)=[CH:14][CH:13]=2)=[N:8]1)=[O:4].[CH:21]([C:23]1[CH:24]=[C:25](B(O)O)[CH:26]=[CH:27][CH:28]=1)=[O:22].C(Cl)Cl.C([O-])([O-])=O.[Na+].[Na+]>C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH3:1][C:2]([CH3:20])([CH3:19])[C:3]([O:5][CH2:6][N:7]1[CH:11]=[N:10][C:9]([C:12]2[CH:17]=[CH:16][C:15]([C:27]3[CH:26]=[CH:25][CH:24]=[C:23]([CH:21]=[O:22])[CH:28]=3)=[CH:14][CH:13]=2)=[N:8]1)=[O:4]

Participants

Conditions

Temperature: 135 °C

Procedure

To a solution of [3-(4-bromophenyl)-1H-1,2,4-triazol-1-yl]methyl 2,2-dimethyl-propanoate (0.108 g, 0.32 mmol; IV-30), 3-formylphenyl boronic acid (0.099 g, 0.66 mmol), and PdCl2(dppf).CH2Cl2 (0.024 g, 0.029 mmol) was added 2M Na2CO3 (aq) (0.38 mL, 0.76 mmol). The mixture was subjected to microwave heating (135° C./50 min), cooled, and partitioned between EtOAc and water. The aqueous layer was extracted with EtOAc, combined organic extracts were dried over Na2SO4 and concentrated in vacuo. The residue was purified by flash chromatography (EtOAc/hexanes), affording the title compound as a colorless solid. 1H NMR (400 MHz, CDCl3) δ ppm 1.20 (s, 9 H), 6.10 (s, 2 H), 7.63 (t, J=7.69 Hz, 1 H), 7.73 (d, J=8.06 Hz, 2 H), 7.90 (dd, J=14.65, 7.57 Hz, 2 H), 8.15 (m, 1 H), 8.23 (d, J=8.30 Hz, 2 H), 8.39 (s, 1 H), 10.10 (s, 1 H).

Workup

temperaturecooled
custompartitioned between EtOAc and water
extractionThe aqueous layer was extracted with EtOAc
dry with materialwere dried over Na2SO4
concentrationconcentrated in vacuo
customThe residue was purified by flash chromatography (EtOAc/hexanes)

Sources & evidence

ORD record: ord-3290803bae5044bf80a17e12a7d2ed01
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08822518B2

Reaction notes

Loading…