Benzoic acid, 2-[(1-ethyl-2-methyl-1H-indol-3-yl)carbonyl]- → Phthalide

HRID 1414110Notes

Reaction equation

HRID 1414110 reaction equation
[C:1]([C:4]1[CH:23]=[CH:22][CH:21]=[CH:20][C:5]=1[C:6](C1C2C(=CC=CC=2)N(CC)C=1C)=[O:7])(O)=[O:2].C(C1C=CC=CC=1C(C1C2C(=CC=CC=2)N(CCCCCCCC)C=1C)=O)(O)=O>>[C:1]1([C:4]2[C:5](=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH2:6][O:7]1)=[O:2]

Participants

3

Reactant 2

HCID 3084978Benzoic acid, 2-[(1-ethyl-2-methyl-1H-indol-3-yl)carbonyl]-HCID 197638022-(2-Methyl-1-octyl-1H-indole-3-carbonyl)benzoic acid

Product 1

HCID 6885Phthalide

Procedure

If the 3-(2'-carboxybenzoyl)-1-ethyl-2-methyl-indole in Example 1 is replaced by an equimolar amount of 3-(2'-carboxybenzoyl)-1-n-octyl-2-methyl-indole, with the procedure otherwise being as described in Example 1, there is obtained 3.8 g of a phthalide compound of the formula ##STR14## which melts at 123°-125° C. This colour former develops on silton clay a blue colour of λ max. 600 nm.

Sources & evidence

ORD record
ord-d515e0a570e34a0ea115448806b49110
Source dataset
uspto-grants-1981_02
Patent number
US04252975

Reaction notes

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