Diisopropylethylamine → HCID 10177192, compound

HRID 1270180Notes

Reaction equation

HRID 1270180 reaction equation
[CH:1]1([C:7]2[CH:15]=[CH:14][C:10]([C:11]([OH:13])=O)=[CH:9][CH:8]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH:16]1[CH:17]=[CH:18][N:19]2[CH2:25][C:24]3[CH:26]=[CH:27][CH:28]=[CH:29][C:23]=3[NH:22][CH2:21][C:20]=12.C(N(CC)C(C)C)(C)C>S(Cl)(Cl)=O.ClCCl>[CH:1]1([C:7]2[CH:8]=[CH:9][C:10]([C:11]([N:22]3[C:23]4[CH:29]=[CH:28][CH:27]=[CH:26][C:24]=4[CH2:25][N:19]4[CH:18]=[CH:17][CH:16]=[C:20]4[CH2:21]3)=[O:13])=[CH:14][CH:15]=2)[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 883374-Cyclohexylbenzoic acidHCID 1554704810,11-Dihydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine

Product 1

HCID 10177192HCID 10177192, compoundYield 66.1%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 24386Thionyl ChlorideSolvent

Procedure

4-Cyclohexylbenzoic acid (0.50 g, 2.45 mmol) was suspended in thionyl chloride (3 mL) and heated at reflux for 30 minutes. After cooling, the thionyl chloride was removed in vacuo. The residue was dissolved in toluene and concentrated in vacuo to give the crude acid chloride as a yellow oil which was then dissolved in dichloromethane (5 mL) and slowly added to a solution of 10,11-dihydro-5H-pyrrolo[2,1-c][1,4]benzodiazepine (0.67 g, 3.64 mmol) and N,N-diisopropylethyl amine (0.94 mL, 5.4 mmol) in dichloromethane (15 mL). After stirring for 2 hours, the reaction was quenched with water. The organic layer was washed with 1 N hydrochloric acid, 1 N sodium hydroxide and brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to give a yellow oil. Purification by flash chromatography using a solvent system of 50% dichloromethane in hexane followed by 25% ethyl acetate in hexane gave a white foam which crystallized upon sonication from hexane/ethyl acetate to provide the title compound (0.60 g) as a white solid, m.p. 127–129° C.

Workup

  1. temperatureheated
  2. temperatureat reflux for 30 minutes
  3. temperatureAfter cooling
  4. customthe thionyl chloride was removed in vacuo
  5. dissolutionThe residue was dissolved in toluene
  6. concentrationconcentrated in vacuo
  7. customto give the crude acid chloride as a yellow oil which
  8. customthe reaction was quenched with water
  9. washThe organic layer was washed with 1 N hydrochloric acid, 1 N sodium hydroxide and brine
  10. dry with materialdried over anhydrous sodium sulfate
  11. filtrationfiltered
  12. concentrationconcentrated in vacuo
  13. customto give a yellow oil
  14. customPurification by flash chromatography
  15. customgave a white foam which
  16. customcrystallized upon sonication from hexane/ethyl acetate

Sources & evidence

ORD record
ord-f16088146f79467c90a5715b8e9fa7aa
Source dataset
uspto-grants-2007_04
Patent number
US07202239B2

Reaction notes

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