Diisopropylethylamine → (2'-methoxy-biphenyl-4-yl)-(5H,11H-pyrrolo[2,1-c][1,4]benzodiazepin-10-yl)-methanone

HRID 2375148Notes

Reaction equation

HRID 2375148 reaction equation
[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:14]=[CH:13][C:12]([C:15]([OH:17])=O)=[CH:11][CH:10]=1.[CH:18]1[CH:19]=[CH:20][N:21]2[CH2:27][C:26]3[CH:28]=[CH:29][CH:30]=[CH:31][C:25]=3[NH:24][CH2:23][C:22]=12.C(N(CC)C(C)C)(C)C>S(Cl)(Cl)=O.ClCCl>[CH3:1][O:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][C:4]=1[C:9]1[CH:10]=[CH:11][C:12]([C:15]([N:24]2[C:25]3[CH:31]=[CH:30][CH:29]=[CH:28][C:26]=3[CH2:27][N:21]3[CH:20]=[CH:19][CH:18]=[C:22]3[CH2:23]2)=[O:17])=[CH:13][CH:14]=1

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 27595482'-Methoxy-biphenyl-4-carboxylic acidHCID 1554704810,11-Dihydro-5H-benzo[e]pyrrolo[1,2-a][1,4]diazepine

Product 1

HCID 10200666(2'-methoxy-biphenyl-4-yl)-(5H,11H-pyrrolo[2,1-c][1,4]benzodiazepin-10-yl)-methanone

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 24386Thionyl ChlorideSolvent

Procedure

A suspension of 2′-methoxy-[1,1′-biphenyl]-4-carboxylic acid of Step B (1.0 g, 4.38 mmol) in thionyl chloride (6 mL) was heated at reflux for 30 min. 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 solid. The latter was then dissolved in dichloromethane (10 mL) and the solution was slowly added to a solution of 10,11-dihydro-5H-pyrrolo [2,1-c][1,4]benzodiazepine (0.97 g, 5.27 mmol) and N,N-diisopropylethyl amine (1.6 mL, 9.19 mmol) in dichloromethane (30 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 foam. Purification of the residue by flash chromatography using a solvent gradient from 15% to 25% of ethyl acetate in hexane provided the title compound as a white foam which was crystallized by sonication from ethyl acetate/hexane (1.4 g, 81.0%) to give a white solid m.p. 145-147° C.

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 30 min
  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 solid
  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 foam
  14. customPurification of the residue by flash chromatography

Sources & evidence

ORD record
ord-107c3e751f8f43e090ce7bd367b44ec9
Source dataset
uspto-grants-2008_12
Patent number
US07465722B2

Reaction notes

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