Nordiazepam → HCID 53928536, compound

HRID 1580603Notes

Reaction equation

HRID 1580603 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[NH:11][C:10](=[O:12])[CH2:9][N:8]=[C:7]([C:13]3[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=3)[C:6]=2[CH:19]=1.C[O-].[Na+].CN(C)C=O.Br[C:29]([CH3:35])([CH3:34])[C:30]([O:32][CH3:33])=[O:31]>O.C1(C)C=CC=CC=1>[CH3:33][O:32][C:30](=[O:31])[C:29]([CH3:35])([CH3:34])[N:11]1[C:5]2[CH:4]=[CH:3][C:2]([Cl:1])=[CH:19][C:6]=2[C:7]([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)=[N:8][CH2:9][C:10]1=[O:12]

Participants

7

Reactant 4

HCID 2997NordiazepamHCID 6228DimethylformamideHCID 90097Methyl 2-bromo-2-methylpropionateHCID 10942334Sodium Methoxide

Product 1

HCID 53928536HCID 53928536, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 1140TolueneSolvent

Procedure

A mixture of 0.1 mole of 7-chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one and 0.11 mole of sodium methoxide in about 200 ml. of dimethylformamide is heated at about 95° C. for about 20 minutes. To the mixture is added a solution of 0.11 mole of methyl 2-bromo-2-methylpropionate in about 200 ml. of toluene over a period of about 1 hour at about 95° C., and heating is continued for an additional period of about 6 hours. The reaction mixture is then evaporated in vacuo and the residue thus obtained is stirred with about 500 ml. of water. The resulting suspension is filtered and the solids thus obtained are crystallized from a suitable organic solvent such as ether, methanol, methylene chloride, methylene chloride-methanol and the like to obtain 7-chloro-2,3-dihydro-α,α-dimethyl-2-oxo-5-phenyl-1H-1,4-benzodiazepin-1-acetic acid methyl ester.

Workup

  1. temperatureheating
  2. customThe reaction mixture is then evaporated in vacuo
  3. customthe residue thus obtained
  4. filtrationThe resulting suspension is filtered
  5. customthe solids thus obtained
  6. customare crystallized from a suitable organic solvent such as ether, methanol, methylene chloride, methylene chloride-methanol

Sources & evidence

ORD record
ord-a05b80f0193b49da90612bf904dc1b55
Source dataset
uspto-grants-1976_01
Patent number
US03933816

Reaction notes

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