Ethanol → HCID 69459234, compound

HRID 1297124Notes

Reaction equation

HRID 1297124 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:14]3[CH:15]=[C:16]([O:21][CH3:22])[C:17]([O:19][CH3:20])=[CH:18][C:13]=3[N:12]([CH2:23][CH3:24])[C:11](=[O:25])[CH2:10][N:9]=2)=[CH:4][CH:3]=1.[C:26]1(B(O)O)[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.C([O-])([O-])=O.[Na+].[Na+].CCO>C1(C)C=CC=CC=1>[C:2]1([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[CH:7]=[CH:6][C:5]([C:8]2[C:14]3[CH:15]=[C:16]([O:21][CH3:22])[C:17]([O:19][CH3:20])=[CH:18][C:13]=3[N:12]([CH2:23][CH3:24])[C:11](=[O:25])[CH2:10][N:9]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 702EthanolHCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 10272494HCID 10272494, compound

Product 1

HCID 69459234HCID 69459234, compoundYield 57.3%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
90 °C

Procedure

Heat at 90° C. for 12 hours under an inert atmosphere a mixture of 100 mg (0.27 mmol) of 5-(4-bromophenyl)-1-ethyl-7,8-dimethoxy-1,3-dihydro-2H-1,4-benzodiazepin-2-one (IIbl), 35 mg (0.30 mmol) of benzene boronic acid, 215 μl of 2M Na2CO3, 25 mg (0.020 mmol) of tetrakis(triphenylphosphine)Pd(0) and 250 μl of EtOH in 5 ml of degassed toluene. Allow to cool to room temperature. Evaporate to dryness. Purify by chromatography (AcOEt). Recrystallize in Et2O. One obtains 62 mg of the abovenamed product in the form of colorless crystals. Yield: 52%. M: 149–150° C. 1H-NMR (CDCl3, 200 MHz): d 1.13 (s, 3H, CH3), 3.78 (s, 3H, OCH3), 3.95 (AB system, ? d=0.57, JAB=13.7, 2H, —NCH2), 3.98 (s, 3H, OCH3), 4.29 (AB system, ? d=0.99 JAB=10.0, 2H, CH2), 6.75 (s, 1H Ar), 6.86 (s, 1H Ar), 7.37–7.75 (m, 9H Ar).

Workup

  1. temperatureto cool to room temperature
  2. customEvaporate to dryness
  3. customPurify by chromatography (AcOEt)
  4. customRecrystallize in Et2O

Sources & evidence

ORD record
ord-c94a63f85947448ab6515343d216f754
Source dataset
uspto-grants-2007_07
Patent number
US07250410B2

Reaction notes

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