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Acetic Acid → 4-(2,4-dichlorophenyl)-2-(2-(fluoromethyl)morpholino)-5-(4H-1,2,4-triazol-3-yl)thiophene-3-carbonitrile

HRID 2091681
Notes
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Reaction equation

HRID 2091681 reaction equation
[C:1]([C:3]1[C:4]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][C:20]=2[Cl:26])=[C:5]([C:16]([NH2:18])=O)[S:6][C:7]=1[N:8]1[CH2:13][CH2:12][O:11][CH:10]([CH2:14][F:15])[CH2:9]1)#[N:2].COC(OC)[N:30]([CH3:32])C.CC(O)=O.O.[NH2:40]N>>[Cl:26][C:20]1[CH:21]=[C:22]([Cl:25])[CH:23]=[CH:24][C:19]=1[C:4]1[C:3]([C:1]#[N:2])=[C:7]([N:8]2[CH2:13][CH2:12][O:11][CH:10]([CH2:14][F:15])[CH2:9]2)[S:6][C:5]=1[C:16]1[NH:30][CH:32]=[N:40][N:18]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 4

HCID 176Acetic AcidHCID 24654Hydrazine hydrate (1:1)HCID 78373Dimethylformamide dimethyl acetalHCID 670728904-Cyano-3-(2,4-dichlorophenyl)-5-(2-(fluoromethyl)morpholino)thiophene-2-carboxamide

Product 1

HCID 1785102814-(2,4-dichlorophenyl)-2-(2-(fluoromethyl)morpholino)-5-(4H-1,2,4-triazol-3-yl)thiophene-3-carbonitrileYield 60%

Procedure

A solution of 4-cyano-3-(2,4-dichlorophenyl)-5-[2-(fluoromethyl)morpholin-4-yl]thiophene-2-carboxamide (38 mg, 0.000092 mol) in 1,1-dimethoxy-N,N-dimethylmethanamine (2.0 mL, 0.015 mol) was irradiated in microwave at 160° C. for 40 min. The solvent was removed and the residue was dissolved in AcOH (1.6 mL, 0.028 mol). Hydrazine monohydrate (0.3 mL, 0.006 mol) was added and the mixture was irradiated in microwave at 120° C. for 10 min. The reaction mixture was concentrated and the residue was treated with water, the solid was collected, dried to afford 4-(2,4-dichlorophenyl)-2-(2-(fluoromethyl)morpholino)-5-(4H-1,2,4-triazol-3-yl)thiophene-3-carbonitrile (23.5 mg, 60%). LCMS: (FA) ES+ 438, ES− 436; 1H NMR (400 MHz, d6-DMSO) δ: 8.01 (s, 1H), 7.57 (d, 1H), 7.39 (dd, 1H), 7.32 d, 1H), 4.59 (t, 1H), 4.47 (t, 1H), 4.08-4.01 (m, 1H), 4.00-3.81 (m, 5H), 3.32-3.20 (m, 1H), 3.18-3.09 (m, 1H).

Workup

  1. customThe solvent was removed
  2. customthe mixture was irradiated in microwave at 120° C. for 10 min
  3. concentrationThe reaction mixture was concentrated
  4. additionthe residue was treated with water
  5. customthe solid was collected
  6. customdried

Sources & evidence

ORD record
ord-93cc463ec8b84de7ac02f9959f561285
Source dataset
uspto-grants-2013_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08440664B2

Reaction notes

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