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

Potassium Carbonate → 8-Ethynyl-10a-(4-methoxyphenyl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one

HRID 1753168
Notes
Print preview

Reaction equation

HRID 1753168 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][C:6]([C:9]23[NH:27][CH2:26][CH2:25][N:10]2[C:11](=[O:24])[C:12]2[N:13]([C:15]([C:18]#[C:19][Si](C)(C)C)=[CH:16][CH:17]=2)[CH2:14]3)=[CH:5][CH:4]=1.C(=O)([O-])[O-].[K+].[K+]>CO.C(Cl)Cl>[C:18]([C:15]1[N:13]2[CH2:14][C:9]3([C:6]4[CH:7]=[CH:8][C:3]([O:2][CH3:1])=[CH:4][CH:5]=4)[NH:27][CH2:26][CH2:25][N:10]3[C:11](=[O:24])[C:12]2=[CH:17][CH:16]=1)#[CH:19]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 11430Potassium CarbonateHCID 6736846710a-(4-methoxyphenyl)-8-[(trimethylsilyl)ethynyl]-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one

Product 1

HCID 866570858-Ethynyl-10a-(4-methoxyphenyl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-oneYield 89%

Reagents, catalysts & solvents 2

HCID 887MethanolSolvent
HCID 6344
Dichloromethane
Solvent

Procedure

To a solution of 10a-(4-methoxyphenyl)-8-[(trimethylsilyl)ethynyl]-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one (84 mg, 0.22 mmol) in methanol (5 mL) was added potassium carbonate (60 mg, 0.43 mmol). The suspension was stirred at room temperature until the reaction was complete (monitored by LCMS). The solid was suspended in CH2Cl2, filtered and concentrated in vacuo to give a residue that was purified by flash chromatography (Biotage SP4, 12 g cartridge, CH2Cl2 3CV, gradient 0-10% MeOH in CH2Cl2 10CV). To give 8-Ethynyl-10a-(4-methoxyphenyl)-2,3,10,10a-tetrahydro-1H,5H-imidazo[1,2-a]pyrrolo[1,2-d]pyrazin-5-one as a yellow solid (60 mg, yield 89%). ESI-MI m/z [M+H]+ 308.0.

Workup

  1. filtrationfiltered
  2. concentrationconcentrated in vacuo
  3. customto give a residue that
  4. customwas purified by flash chromatography (Biotage SP4, 12 g cartridge, CH2Cl2 3CV, gradient 0-10% MeOH in CH2Cl2 10CV)

Sources & evidence

ORD record
ord-47daf1b0e6684dbc8e8474a1a6959bb9
Source dataset
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09163029B2

Reaction notes

Loading…

On this pageParticipantsProcedureWorkupSources & evidenceReaction notes