1,2-Dichloroethane → HCID 22940585, compound

HRID 609723Notes

Reaction equation

HRID 609723 reaction equation
Br.[NH2:2][CH:3]1[N:9]=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[C:7]2[CH:16]=[CH:17][CH:18]=[CH:19][C:6]=2[NH:5][C:4]1=[O:20].[NH4+].[NH4+].[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[Ce+4].C(C(C(C([O-])=O)O)O)([O-])=O.[K+].[K+].Br.C(O)(=O)C.[NH:65]1[C:69](=[O:70])[CH2:68][CH2:67][C@H:66]1[C:71](O)=[O:72].C(Cl)CCl.C1C=CC2N(O)N=NC=2C=1.C(N(C(C)C)CC)(C)C>CN(C=O)C.C(#N)C>[O:70]=[C:69]1[NH:65][C@H:66]([C:71]([NH:2][CH:3]2[N:9]=[C:8]([C:10]3[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=3)[C:7]3[CH:16]=[CH:17][CH:18]=[CH:19][C:6]=3[NH:5][C:4]2=[O:20])=[O:72])[CH2:67][CH2:68]1

Participants

10

Reactant 7

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 180504Ceric ammonium nitrateHCID 6100505Dipotassium 2,3-dihydroxybutanedioateHCID 18917698HCID 18917698, compoundHCID 86754905HCID 86754905, compound

Product 1

HCID 22940585HCID 22940585, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6342AcetonitrileSolvent

Procedure

A solution of 3-amino-2,3-dihydro-2-oxo-5-phenyl-1H-1,4-benzodiazepine hydrogen bromide (142 mg, 0.426 mmol), prepared by sequential treatment of an aqueous acetonitrile solution of the 4-methoxybenzyl derivative from example 5 with ammonium cerium IV nitrate, potassium tartrate solution and HBr/acetic acid-(L)-pyroglutamic acid (60.2 mg, 0.466 mmol), EDC (91 mg, 0.473 mmol), HOBT (63.5 mg, 0.473 mmol), and diisopropylethylamine (0.082 ml, 0.473 mmol) in DMF (5 ml) was stirred at room temperature for 18 hours. The resultant solution was concentrated in vacuo, and the residue partitioned between ethyl acetate and aqueous sodium bicarbonate solution. The organic extract was washed with brine, dried, (MgSO4), filtered, and concentrated. The residue was purified by preparative HPLC (C18, eluted with a 5:95 to 40:60 water:acetonitrile). Lyophilization provided the titled compound as a 1:1 mixture of diastereomers.

Workup

  1. concentrationThe resultant solution was concentrated in vacuo
  2. customthe residue partitioned between ethyl acetate and aqueous sodium bicarbonate solution
  3. extractionThe organic extract
  4. washwas washed with brine
  5. dry with materialdried, (MgSO4),
  6. filtrationfiltered
  7. concentrationconcentrated
  8. customThe residue was purified by preparative HPLC (C18
  9. washeluted with a 5:95 to 40:60 water

Sources & evidence

ORD record
ord-772ee2a01e944cc49e601f2e9601390d
Source dataset
uspto-grants-1999_12
Patent number
US05998407

Reaction notes

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