HomeMCPWorkbenchSkills
HomeWorkbenchNotificationsMe
llms.txt · MCP GuidePrivacy Policy · Terms of Service · Supportv1.8.0
  1. Home
  2. /Reaction

Acetyl chloride → 2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile

HRID 1780976
Notes
Print preview

Reaction equation

HRID 1780976 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([C:16]#N)[NH:9][C:10](=O)[C:11]([F:14])([F:13])[F:12])=[CH:4][CH:3]=1.CS(O)(=O)=O.C(Cl)(=O)C.ClC(=C)[C:29]#[N:30].[CH2:32](N(CC)CC)C>C1(C)C=CC=CC=1.C(#N)C.O.CCCCCCC.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[NH:9][C:10]([C:11]([F:12])([F:13])[F:14])=[CH:32][C:16]=2[C:29]#[N:30])=[CH:6][CH:7]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

11

Reactant 5

HCID 6367Acetyl chlorideHCID 6395Methanesulfonic AcidHCID 8471TriethylamineHCID 701982-ChloroacrylonitrileHCID 9903361N-(p-chloro-a-cyanobenzyl)-2,2,2-trifluoroacetamide

Product 1

HCID 110001432-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile

Reagents, catalysts & solvents 5

HCID 962WaterSolventHCID 1140TolueneSolventHCID 6342AcetonitrileSolventHCID 8857Ethyl AcetateSolventHCID 8900HeptaneSolvent

Conditions

Temperature
80 °C

Procedure

A slurry of N-[(p-chlorophenyl)cyanomethyl]-2,2,2-trifluoroacetamide (13.1 g, 0.05 mol) in toluene is treated sequentially with methanesulfonic acid (2.4 g, 0.025 mol) and acetyl chloride (4.32 g, 0.055 mol), at room temperature, heated at 80° C. for 2 hours, cooled to room temperature, diluted with acetonitrile, treated first with 2-chloroacrylonitrile (5.25 g, 0.06 mol) then dropwise with triethylamine (13.7 g, 0.135 mol), heated at 70°-72° C. for 1 hour, cooled to room temperature and diluted with water. The mixture is extracted with ethyl acetate. The extracts are combined, washed with water and concentrated in vacuo to give a residue. Flash chromatography (silica-gel; 15% ethyl acetate in heptane as eluent) to give the title product.

Workup

  1. temperaturecooled to room temperature
  2. temperaturecooled to room temperature
  3. extractionThe mixture is extracted with ethyl acetate
  4. washwashed with water
  5. concentrationconcentrated in vacuo
  6. customto give a residue

Sources & evidence

ORD record
ord-7b3d35f9eec5401abafe481d8cf02aaf
Source dataset
uspto-grants-1997_05
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US05631379

Reaction notes

Loading…

On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes