Maleic Anhydride → HCID 86751388, compound

HRID 1418105Notes

Reaction equation

[CH3:1][CH:2]([CH2:5][OH:6])[CH2:3][OH:4].[C:7]1(=[O:13])[O:12][C:10](=[O:11])[CH:9]=[CH:8]1>>[C:7]([OH:12])(=[O:13])/[CH:8]=[CH:9]\[C:10]([OH:4])=[O:11].[C:7]([OH:12])(=[O:13])/[CH:8]=[CH:9]\[C:10]([OH:4])=[O:11].[CH3:1][CH:2]([CH2:5][OH:6])[CH2:3][OH:4]

Participants

Reactant 2

HCID 7923Maleic Anhydride

HCID 75103Methylpropanediol

Product 1

HCID 86751388HCID 86751388, compound

Procedure

A three-liter glass reactor equipped as described in Example 17 is charged, under a stream of nitrogen, with 2-methyl-1,3-propanediol (216 g, 2.4 mol) and maleic anhydride (471 g, 4.8 mol). The mixture is heated at 195°-210° C. for 1.5 to 2 h with no steam in the reflux column to give 2-methyl-1,3-propanediol bismaleate. The reactor is then charged with 2-methyl-1,3-propanediol (115 g) and 497 g of a glycol ester made from 2-methyl-1,3-propanediol (1442 g) and terephthalic acid (1329 g) (2:1 molar ratio of diol to acid used to make the glycol ester).

Workup

customA three-liter glass reactor equipped
temperatureThe mixture is heated at 195°-210° C. for 1.5 to 2 h with no steam in the reflux column

Sources & evidence

ORD record: ord-62f2139a53934202abd1417713be1c59
Source dataset: uspto-grants-1999_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05880225

Reaction notes

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