1,2-Dichloroethane → 4-[2-(3-Cyano-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazol-8-yloxy)-acetyl]-piperazine-1-carboxylic acid tert-butyl ester

HRID 2275101Notes

Reaction equation

HRID 2275101 reaction equation
[C:1]([C:3]1[CH:15]=[C:14]2[C:6]([C:7]3[C:8](=[O:27])[C:9]4[CH:21]=[CH:20][C:19]([O:22][CH2:23][C:24]([OH:26])=O)=[CH:18][C:10]=4[C:11]([CH3:17])([CH3:16])[C:12]=3[NH:13]2)=[CH:5][CH:4]=1)#[N:2].[C:28]([O:32][C:33]([N:35]1[CH2:40][CH2:39][NH:38][CH2:37][CH2:36]1)=[O:34])([CH3:31])([CH3:30])[CH3:29].C1C=CC2N(O)N=NC=2C=1.C(Cl)CCl>CN(C=O)C>[C:28]([O:32][C:33]([N:35]1[CH2:40][CH2:39][N:38]([C:24](=[O:26])[CH2:23][O:22][C:19]2[CH:20]=[CH:21][C:9]3[C:8](=[O:27])[C:7]4[C:6]5[C:14](=[CH:15][C:3]([C:1]#[N:2])=[CH:4][CH:5]=5)[NH:13][C:12]=4[C:11]([CH3:16])([CH3:17])[C:10]=3[CH:18]=2)[CH2:37][CH2:36]1)=[O:34])([CH3:31])([CH3:29])[CH3:30]

Participants

6

Reactant 4

HCID 111,2-DichloroethaneHCID 757711-HydroxybenzotriazoleHCID 143452tert-Butyl piperazine-1-carboxylateHCID 66834010(3-Cyano-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazol-8-yloxy)-acetic acid

Product 1

HCID 668341864-[2-(3-Cyano-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazol-8-yloxy)-acetyl]-piperazine-1-carboxylic acid tert-butyl esterYield 45.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

(3-Cyano-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazol-8-yloxy)-acetic acid (Compound A8-7, 30 mg, 0.083 mmol), piperazine-1-carboxylic acid tert-butyl ester (31 mg, 2 eq.), and HOBt (30 mg, 3 eq.) were dissolved in 0.5 ml DMF, added with EDC (48 mg, 3 eq.), and stirred at room temperature overnight. Thereafter, the solvent was removed under reduced pressure and the resulting residues were purified by preparative TLC to obtain the title compound (20 mg).

Workup

  1. customThereafter, the solvent was removed under reduced pressure
  2. customthe resulting residues were purified by preparative TLC

Sources & evidence

ORD record
ord-eb90b63b29764e348ef3679da706b62f
Source dataset
uspto-grants-2015_09
Patent number
US09126931B2

Reaction notes

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