Chlorotrimethylsilane → HCID 56961562, compound

HRID 401021Notes

Reaction equation

HRID 401021 reaction equation
[C:1]1([C:7](=O)[CH2:8][C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:16]([O:18][C:19]1[CH:20]=[C:21]([CH:24]=[C:25]([N+:28]([O-:30])=[O:29])[C:26]=1[OH:27])[CH:22]=O)[CH3:17].[CH3:31][NH:32][C:33]([NH:35][CH3:36])=[O:34].C[Si](Cl)(C)C>CN(C=O)C>[CH2:16]([O:18][C:19]1[CH:20]=[C:21]([CH:22]2[C:8]([C:9]3[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=3)=[C:7]([C:1]3[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=3)[N:35]([CH3:36])[C:33](=[O:34])[N:32]2[CH3:31])[CH:24]=[C:25]([N+:28]([O-:30])=[O:29])[C:26]=1[OH:27])[CH3:17]

Participants

6

Reactant 4

HCID 6397ChlorotrimethylsilaneHCID 7293N,N'-DimethylureaHCID 99482-PhenylacetophenoneHCID 5848783-Ethoxy-4-hydroxy-5-nitrobenzaldehyde

Product 1

HCID 56961562HCID 56961562, compoundYield 11.7%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 1,2-diphenylethanone (300 mg, 1.53 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (324 mg, 1.53 mmol), and 1,3-dimethylurea (174 mg, 1.98 mmol) in DMF (5 mL) was added TMSCl (1.0 g, 9.12 mmol), and the reaction mixture was stirred at room temperature overnight under nitrogen. LCMS showed that about 30% of starting materials were consumed. H2O (10 mL) was added to quench the reaction, and the aqueous layer was extracted with EtOAc (30 mL×3). The combined organic layer was washed with brine (20 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by column chromatography (PE: EtOAc=1:2) and preparative HPLC to afford Compound 41 as a yellow solid (82 mg, yield: 11.6%). 1H NMR (DMSO-d6 400 MHz): δ 10.40 (s, 1H), 7.50 (s, 1H), 7.30 (d, J=6.0 Hz, 3H), 7.25 (d, J=8.0 Hz, 3H), 7.00 (d, J=6.8 Hz, 3H), 6.75 (d, J=6.4 Hz, 2H), 5.11 (s, 1H), 4.00-4.17 (m, 2H), 2.82 (s, 3H), 2.75 (s, 3H), 1.33 (t, J=6.8 Hz, 3H); MS (ESI): m/z 460.1 [M+1]+.

Workup

  1. customwere consumed
  2. additionH2O (10 mL) was added
  3. customto quench
  4. customthe reaction
  5. extractionthe aqueous layer was extracted with EtOAc (30 mL×3)
  6. washThe combined organic layer was washed with brine (20 mL)
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe residue was purified by column chromatography (PE: EtOAc=1:2) and preparative HPLC

Sources & evidence

ORD record
ord-540587c36791402db9aa7071811aba30
Source dataset
uspto-grants-2014_06
Patent number
US08741915B2

Reaction notes

Loading…