Dimethylformamide → HCID 54115901, compound

HRID 862247Notes

Reaction equation

HRID 862247 reaction equation
[CH3:1][O:2][C:3](=[O:28])[CH2:4][N:5]1[C:11](=[O:12])[C@@H:10]([NH:13][C:14](=[O:23])[CH2:15][CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH2:9][NH:8][C:7]2[CH:24]=[CH:25][CH:26]=[CH:27][C:6]1=2.C(=O)([O-])[O-].[Ca+2].[CH2:34](Br)[C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=1.CN(C)C=O>C(OCC)(=O)C>[CH3:1][O:2][C:3](=[O:28])[CH2:4][N:5]1[C:11](=[O:12])[C@@H:10]([NH:13][C:14](=[O:23])[CH2:15][CH2:16][C:17]2[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=2)[CH2:9][N:8]([CH2:34][C:35]2[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=2)[C:7]2[CH:24]=[CH:25][CH:26]=[CH:27][C:6]1=2

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 7498Benzyl BromideHCID 10112Calcium CarbonateHCID 53730563HCID 53730563, compound

Product 1

HCID 54115901HCID 54115901, compoundYield 75%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

[2-Oxo-3-(3-phenylpropionylamino)-2,3,4,5-tetrahydrobenzo-[b][1,4]diazepin-1-yl]acetic acid methyl ester (104a; 500 mg, 1.31 mmol), calcium carbonate (155 mg, 1.58 mmol), and benzyl bromide (170 μl, 1.44 mmol) were taken into 10 ml of dimethylformamide and heated to 80° C. for 8 hours. The mixture was diluted with 150 ml of ethyl acetate and washed 4 times with 50 ml of water. The organic layer was dried over anhydrous sodium sulfate, filtered, and evaporated to give a viscous, yellow oil that was purified by flash chromatography eluting with dichloromethane/ethyl acetate (8:2) to give 460 mg (75%) of the title compound as a white solid. 1H NMR (CDCl3) δ 7.34-7.05 (14H, m), 6.32-6.28 (1H, d), 4.84-4.76 (1H, d), 4.76-4.70(1H, m), 4.43-4.37 (1H, d), 4.26-4.18 (1H, d), 4.06-4.00 (1H, d), 3.79 (3H, s), 3.45-3.37 (1H, m), 3.02-2.95 (1H, m), 2.90-2.82 (2H, m), 2.5-2.34 (2H, m).

Workup

  1. washwashed 4 times with 50 ml of water
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. customevaporated
  5. customto give a viscous, yellow oil that
  6. customwas purified by flash chromatography
  7. washeluting with dichloromethane/ethyl acetate (8:2)

Sources & evidence

ORD record
ord-524f9bdc5f4d4ad1b3e403e62871faa3
Source dataset
uspto-grants-1998_02
Patent number
US05716929

Reaction notes

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