Toluene → 3-(9-bromo-4,5-dihydro-6-oxa-1-thia-benzo[e]azulen-2-yl)-4-(2-chloro-4-fluoro-phenyl)-4H-[1,2,4]triazole

HRID 84556

Reaction equation

HRID 84556 reaction equation
[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[CH:10]=[C:9]([C:15]4O[CH:17]=[N:18][N:19]=4)[S:8][C:7]=3[C:6]=2[CH:20]=1.[Cl:21][C:22]1[CH:28]=[C:27]([F:29])[CH:26]=[CH:25][C:23]=1[NH2:24].C(O)(C(F)(F)F)=O.C1(C)C=CC=CC=1>CCOC(C)=O>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[CH:10]=[C:9]([C:15]4[N:24]([C:23]5[CH:25]=[CH:26][C:27]([F:29])=[CH:28][C:22]=5[Cl:21])[CH:17]=[N:18][N:19]=4)[S:8][C:7]=3[C:6]=2[CH:20]=1

Participants

6

Reactant 4

HCID 1140TolueneHCID 6422Trifluoroacetic acidHCID 75013Benzenamine, 2-chloro-4-fluoro-HCID 668868092-(9-Bromo-4,5-dihydro-6-oxa-1-thia-benzo[e]azulen-2-yl)-[1,3,4]oxadiazole

Product 1

HCID 579004223-(9-bromo-4,5-dihydro-6-oxa-1-thia-benzo[e]azulen-2-yl)-4-(2-chloro-4-fluoro-phenyl)-4H-[1,2,4]triazoleYield 68%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
160 °C

Procedure

A microwave tube was charged with 2-(9-bromo-4,5-dihydro-6-oxa-1-thia-benzo[e]azulen-2-yl)-[1,3,4]oxadiazole (0.64 g; 1.83 mmol), 2-chloro-4-fluoroaniline (0.44 ml; 3.68 mmol), TFA (0.27 ml; 3.63 mmol) and toluene (5 ml). The mixture was heated in a microwave at 160° C. for 30 min., diluted with EtOAc (150 ml) and washed with satd. NaHCO3. The organic layer was dried (MgSO4), concentrated and purified by ISCO to give 267 as a cream-coloured solid (0.59 g; 68%). δH (400 MHz, CDCl3) 3.14 (t, J=5.2, 2H), 4.29 (t, J=5.2, 2H), 6.91 (d, J=8.4, 1H), 6.93 (s, 1H), 7.22-7.27 (m, 2H), 7.43-7.51 (m, 2H), 7.65 (d, J=2.4, 1H), 8.22 (s, 1H). [M+H]+: 478

Workup

  1. washwashed with satd
  2. dry with materialThe organic layer was dried (MgSO4)
  3. concentrationconcentrated
  4. custompurified by ISCO

Sources & evidence

ORD record
ord-7cc49108f3ac4bd3b30d40504cab7c2d
Source dataset
uspto-grants-2014_09
Patent number
US08846762B2

Linked notes

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