Acetic Anhydride → Dihydro-4-(2-methylpropyl)-2H-pyran-2,6(3H)-dione

HRID 229944Notes

Reaction equation

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

Participants

Reactant 2

HCID 7918Acetic Anhydride

HCID 10976240Isobutylglutaric acid

Product 1

HCID 11480690Dihydro-4-(2-methylpropyl)-2H-pyran-2,6(3H)-dione

Procedure

combining the 3-isobutylglutaric acid with acetic anhydride to obtain a second mixture; heating the second mixture to obtain 3-isobutyl glutaric anhydride 22; and recovering the 3-isobutyl glutaric anhydride 22.

Workup

customto obtain a second mixture
temperatureheating the second mixture

Sources & evidence

ORD record: ord-b72e7481a4194289abe150124f24b59e
Source dataset: uspto-grants-2009_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07563923B2

Reaction notes

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