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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1879524Generated: October 31, 2026

Sodium Hydroxide → (3,6-Dimethyl-1,2-phenylene)dimethanol

https://huagongshe.com/reaction/1879524

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSodium HydroxideHCID 14798—
Reactant4,7-Dimethyl-3a,4,7,7a-tetrahydro-4,7-epoxy-2-benzofuran-1,3-dioneHCID 245036—
ReactantAluminium lithium hydrideHCID 21226445—
SolventTetrahydrofuranHCID 8028—
Product(3,6-Dimethyl-1,2-phenylene)dimethanolHCID 13220177—

Reaction Conditions

Temperature-78 °C

Reaction Steps

A 1 L 3-necked RBF is charged with a 1.0M lithium aluminium hydride solution in tetrahydrofuran (175 mL, 0.175 mol) and anhydrous tetrahydrofuran (100 mL) under nitrogen. The solution is cooled to −78° C. and a solution of 1,7-dimethyl-4,10-dioxa-tricyclo[5.2.1.02,6]dec-8-ene-3,5-dione 2 (12.3 g, 0.070 mol) in anhydrous tetrahydrofuran (150 mL) is added from a dropping funnel over a period of 30 minutes The reaction mixture is heated to reflux and stirred for 45 h. The reaction mixture is cooled to 0° C. using an ice bath and 2M sodium hydroxide solution (20 mL) is slowly added dropwise. The mixture is allowed to warm up to 22° C. and the precipitate is filtered off and washed thoroughly with diethyl ether and tetrahydrofuran. The filtrate is concentrated in vacuo.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08318048B2
Source datasetuspto-grants-2012_11
ORD IDord-22aaf414b26e4469b64d6b50aa33e9c9
Source noteuspto-grants-2012_11