8-Chloro-1-(4-oxo-cyclohexyl)-4H,6H-2,3,5,10b-tetraaza-benzo[e]azulene-5-carboxylic acid tert-butyl ester → 8-Chloro-1-(4-hydroxy-4-phenyl-cyclohexyl)-4H,6H-2,3,5,10b-tetraaza-benzo[e]azulene-5-carboxylic acid tert-butyl ester

HRID 1255454Notes

Reaction equation

HRID 1255454 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:17][C:16]2[N:12]([C:13]([CH:18]3[CH2:23][CH2:22][C:21](=[O:24])[CH2:20][CH2:19]3)=[N:14][N:15]=2)[C:11]2[CH:25]=[CH:26][C:27]([Cl:29])=[CH:28][C:10]=2[CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:30]1([Mg]Cl)[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1>O1CCCC1>[C:1]([O:5][C:6]([N:8]1[CH2:17][C:16]2[N:12]([C:13]([CH:18]3[CH2:19][CH2:20][C:21]([OH:24])([C:30]4[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=4)[CH2:22][CH2:23]3)=[N:14][N:15]=2)[C:11]2[CH:25]=[CH:26][C:27]([Cl:29])=[CH:28][C:10]=2[CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

4

Reactant 2

HCID 584587428-Chloro-1-(4-oxo-cyclohexyl)-4H,6H-2,3,5,10b-tetraaza-benzo[e]azulene-5-carboxylic acid tert-butyl esterHCID 178478979HCID 178478979, compound

Product 1

HCID 674368838-Chloro-1-(4-hydroxy-4-phenyl-cyclohexyl)-4H,6H-2,3,5,10b-tetraaza-benzo[e]azulene-5-carboxylic acid tert-butyl esterYield 42%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of 8-chloro-1-(4-oxo-cyclohexyl)-4H,6H-2,3,5,10b-tetraaza-benzo[e]azulene-5-carboxylic acid tert-butyl ester (0.19 g, 0.46 mmol) in dry tetrahydrofuran (5 ml) was added a 2M phenyl magnesium chloride solution in tetrahydrofuran (0.24 ml, 0.48 mmol) at room temperature. After stirring for 2 h the reaction mixture was quenched with aqueous saturated ammonium chloride solution and extracted with three portions of tert-butyl methyl ether. The combined organic layers were washed with one portion of brine, dried over anhydrous sodium sulfate and concentrated in vacuo. Flash-chromatography with n-heptane/ethyl acetate as eluent gave the title compound (0.094 g, 42%) as white solid. MS m/e: 495 ([[M+H]]+)

Workup

  1. customwas quenched with aqueous saturated ammonium chloride solution
  2. extractionextracted with three portions of tert-butyl methyl ether
  3. washThe combined organic layers were washed with one portion of brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-0e650637c77f4701a7dd1e1082e16219
Source dataset
uspto-grants-2013_06
Patent number
US08461151B2

Reaction notes

Loading…