4,5-Dichlorophthalic anhydride → HCID 53675902, compound

HRID 2165070Notes

Reaction equation

HRID 2165070 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[O:10])[O:8][C:6](=O)[C:5]2=[CH:11][C:12]=1[Cl:13].[C:14]([CH:19]=P(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)([O:16][CH2:17][CH3:18])=[O:15]>C(Cl)(Cl)Cl>[CH2:17]([O:16][C:14]([CH:19]=[C:6]1[C:5]2[C:4](=[CH:3][C:2]([Cl:1])=[C:12]([Cl:13])[CH:11]=2)[C:9](=[O:10])[O:8]1)=[O:15])[CH3:18]

Participants

4

Reactant 2

HCID 703344,5-Dichlorophthalic anhydrideHCID 70670Acetic acid, 2-(triphenylphosphoranylidene)-, ethyl ester

Product 1

HCID 53675902HCID 53675902, compoundYield 70.8%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent

Procedure

A solution of 4,5-dichlorophthalic anhydride (10.0 g) and (carbethoxymethylene)triphenylphosphorane (16.0 g) in chloroform (450 ml) was refluxed for 16 hours. Evaporation of chloroform and chromatography of the residue over silica gel gave the product (9.34 g).

Workup

  1. customEvaporation of chloroform and chromatography of the residue over silica gel

Sources & evidence

ORD record
ord-73679e24967845a298053b873e2869d6
Source dataset
uspto-grants-1990_07
Patent number
US04939140

Reaction notes

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