2-Methylindole → 5-(2-methyl-3-indolyl)-5-(1-ethyl-2-methyl-3-indolyl)3,4-dichloro-2(5H)-furanone

HRID 1632891Notes

Reaction equation

HRID 1632891 reaction equation
[CH2:1]([N:3]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]([C:12](=O)[C:13]([Cl:19])=[C:14]([Cl:18])[C:15]([OH:17])=[O:16])=[C:4]1[CH3:21])[CH3:2].[CH3:22][C:23]1[NH:24][C:25]2[C:30]([CH:31]=1)=[CH:29][CH:28]=[CH:27][CH:26]=2>C(OC(=O)C)(=O)C>[CH2:1]([N:3]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5]([C:12]2([C:31]3[C:30]4[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=4)[NH:24][C:23]=3[CH3:22])[O:17][C:15](=[O:16])[C:14]([Cl:18])=[C:13]2[Cl:19])=[C:4]1[CH3:21])[CH3:2]

Participants

4

Reactant 2

HCID 72242-MethylindoleHCID 545093234-(1-Ethyl-2-methyl-3-indolyl)-2,3-dichloro-4-oxo-2-butenoic acid

Product 1

HCID 204427125-(2-methyl-3-indolyl)-5-(1-ethyl-2-methyl-3-indolyl)3,4-dichloro-2(5H)-furanone

Reagents, catalysts & solvents 1

HCID 7918Acetic AnhydrideSolvent

Procedure

A mixture of 10.0 g (0.047 mole) of 4-(1-ethyl-2-methyl-3-indolyl)-2,3-dichloro-4-oxo-2-butenoic acid, 4.0 g (0.030 mole) of 2-methylindole and 150 ml of acetic anhydride was stirred at ambient temperature in an atmosphere of air for approximately seventeen hours and the solid which formed was collected by filtration. After drying in vacuo at 60° C. there was obtained 5-(1-ethyl-2-methyl-3-indolyl)-5-(2-methyl-3-indolyl)-3,4-dichloro-2(5H)-furanone (Formula V: R=CH3CH2 ; R1 =R3 =CH3 ; R2 =Y=Y1 =H) as a blue-colored solid which melted over the range of 282°-285° C.

Workup

  1. customthe solid which formed
  2. filtrationwas collected by filtration
  3. customAfter drying in vacuo at 60° C.

Sources & evidence

ORD record
ord-79630959e925489d8805196a3ef158f3
Source dataset
uspto-grants-1984_10
Patent number
US04477676

Reaction notes

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