7-Methylisatin → HCID 20351109, compound

HRID 2052576Notes

Reaction equation

HRID 2052576 reaction equation
[CH3:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:10]=1[NH:9][C:8](=[O:11])[C:7]2=[O:12].P(Cl)(Cl)(Cl)(Cl)[Cl:14]>>[Cl-:14].[CH3:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:10]=1[NH:9][C:8](=[O:11])[C:7]2=[O:12]

Participants

3

Reactant 2

HCID 143137-MethylisatinHCID 24819Phosphorus pentachloride

Product 1

HCID 20351109HCID 20351109, compound

Procedure

By reacting 7-methylisatin with phosphorous pentachloride, there is obtained 7-methylisatin chloride which, on reaction with 5,6,7-trichloro 3(2H)-thianaphthenone, yields 5,6,7-trichloro-7'-methyl-2'-indole-2-thianaphthene indigo, which also is useful as a dyestuff.

Sources & evidence

ORD record
ord-c5a0d80ffe2b48fabf6a20ec506eaf9a
Source dataset
uspto-grants-1980_01
Patent number
US04186132

Reaction notes

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