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Water → 4-(4,5-dihydropyrido[4,3-b]thieno[2,3-d]oxepin-2-yl)-5-(2-chlorophenyl)-2H-1,2,3-triazole

HRID 1949874
Notes
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Reaction equation

HRID 1949874 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[C:8]#[C:9][C:10]1[S:23][C:13]2[C:14]3[CH:22]=[N:21][CH:20]=[CH:19][C:15]=3[O:16][CH2:17][CH2:18][C:12]=2[CH:11]=1.[N-:24]=[N+:25]=[N-:26].[Na+].O>CS(C)=O>[S:23]1[C:13]2[C:14]3[CH:22]=[N:21][CH:20]=[CH:19][C:15]=3[O:16][CH2:17][CH2:18][C:12]=2[CH:11]=[C:10]1[C:9]1[C:8]([C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[Cl:1])=[N:26][NH:25][N:24]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 962WaterHCID 33557Sodium AzideHCID 579001342-((2-Chlorophenyl)ethynyl)-4,5-dihydropyrido[4,3-b]thieno[2,3-d]oxepine

Product 1

HCID 579004024-(4,5-dihydropyrido[4,3-b]thieno[2,3-d]oxepin-2-yl)-5-(2-chlorophenyl)-2H-1,2,3-triazoleYield 18.4%

Reagents, catalysts & solvents 1

HCID 679Dimethyl Sulfoxide
Solvent

Conditions

Temperature
90 °C

Procedure

A mixture of 68 mg (0.2 mmol) of 2-((2-chlorophenyl)ethynyl)-4,5-dihydropyrido[4,3-b]thieno[2,3-d]oxepine and 52 mg (0.8 mmol) of sodium azide in 4 ml of dimethylsulfoxide was heated at 90° C. for 36 hours. Water (20 ml) was added to the mixture and extracted 6 times with 10 ml of ethyl acetate. The combined organic extracts were washed with water, brine and dried over sodium sulfate. The solvent was removed in vacuum and the crude product was recrystallized from ethyl acetate to give 324 (14 mg, 18%). 1H NMR (400 MHz, DMSO) δ 8.68 (s, 1H), 8.24 (d, J=5.5, 1H), 7.73-7.46 (m, 4H), 6.98 (d, J=5.5, 1H), 6.77 (s, 1H), 4.31 (t, J=4.7, 2H), 3.08 (t, J=4.7, 2H). MS: (ESI+) 381.1

Workup

  1. extractionextracted 6 times with 10 ml of ethyl acetate
  2. washThe combined organic extracts were washed with water, brine
  3. dry with materialdried over sodium sulfate
  4. customThe solvent was removed in vacuum
  5. customthe crude product was recrystallized from ethyl acetate

Sources & evidence

ORD record
ord-282bc9e38ea04c9887b90434e22919e0
Source dataset
uspto-grants-2013_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08399690B2

Reaction notes

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