Dimethylformamide → 6-chloro-3-cyano-N5-(1-cyanocyclopropyl)-1-ethyl-N2-{2,2,2-trifluoro-1-[3-(trifluoromethyl)phenyl]ethyl}-1H-indole-2,5-dicarboxamide

HRID 514270Notes

Reaction equation

HRID 514270 reaction equation
[Cl:1][C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[C:7]([C:13]([NH:15][CH:16]([C:21]3[CH:26]=[CH:25][CH:24]=[C:23]([C:27]([F:30])([F:29])[F:28])[CH:22]=3)[C:17]([F:20])([F:19])[F:18])=[O:14])[N:8]2[CH2:11][CH3:12])=[CH:4][C:3]=1[C:31]([NH:33][C:34]1([C:37]#[N:38])[CH2:36][CH2:35]1)=[O:32].ClS([N:43]=[C:44]=O)(=O)=O.CN(C)C=O>C(#N)C>[Cl:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:44]#[N:43])=[C:7]([C:13]([NH:15][CH:16]([C:21]3[CH:26]=[CH:25][CH:24]=[C:23]([C:27]([F:30])([F:28])[F:29])[CH:22]=3)[C:17]([F:18])([F:20])[F:19])=[O:14])[N:8]2[CH2:11][CH3:12])=[CH:4][C:3]=1[C:31]([NH:33][C:34]1([C:37]#[N:38])[CH2:35][CH2:36]1)=[O:32]

Participants

5

Reactant 3

HCID 6228Dimethylformamide2×HCID 70918Chlorosulfonyl isocyanate2×HCID 601689226-chloro-N5-(1-cyanocyclopropyl)-1-ethyl-N2-{2,2,2-trifluoro-1-[3-(trifluoromethyl)phenyl]ethyl}-1H-indole-2,5-dicarboxamide

Product 1

HCID 867139886-chloro-3-cyano-N5-(1-cyanocyclopropyl)-1-ethyl-N2-{2,2,2-trifluoro-1-[3-(trifluoromethyl)phenyl]ethyl}-1H-indole-2,5-dicarboxamideYield 5.7%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
0 °C

Procedure

6-Chloro-N5-(1-cyanocyclopropyl)-1-ethyl-N2-{2,2,2-trifluoro-1-[3-(trifluoromethyl)phenyl]ethyl}-1H-indole-2,5-dicarboxamide (0.100 g, 0.18 mmol) is initially charged in dry acetonitrile (2 ml) under argon and cooled to 0° C., and chlorosulphonyl isocyanate (0.028 g, 0.19 mmol) is added dropwise. After 30 min, N,N-dimethylformamide (0.015 g, 0.19 mmol) is added and the mixture is stirred at 0° C. for a further 30 min and at room temperature overnight. Then the mixture is cooled again to 0° C. and chlorosulphonyl isocyanate (0.028 g, 0.19 mmol) is added dropwise, N,N-dimethylformamide (0.015 g, 0.19 mmol) is added after 30 min, and the mixture is stirred at room temperature for a further 48 h. The reaction mixture is then concentrated under reduced pressure, and the residue is admixed with sodium hydrogencarbonate and extracted with dichloromethane. The organic phase is dried with sodium sulphate, filtered and concentrated under reduced pressure. The residue is purified by means of preparative HPLC (Kromasil100, C18 250×20; eluent: acetonitrile in water, gradient: 10-100%) to obtain 0.006 g (5% of theory) of 6-chloro-3-cyano-N5-(1-cyanocyclopropyl)-1-ethyl-N2-{2,2,2-trifluoro-1-[3-(trifluoromethyl)phenyl]ethyl}-1H-indole-2,5-dicarboxamide.

Workup

  1. temperatureThen the mixture is cooled again to 0° C.
  2. stirringthe mixture is stirred at room temperature for a further 48 h
  3. concentrationThe reaction mixture is then concentrated under reduced pressure
  4. extractionextracted with dichloromethane
  5. dry with materialThe organic phase is dried with sodium sulphate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe residue is purified by means of preparative HPLC (Kromasil100, C18 250×20

Sources & evidence

ORD record
ord-5d2b872b947048b4a4060635975d8e78
Source dataset
uspto-grants-2015_08
Patent number
US09107411B2

Reaction notes

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