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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1658072Generated: October 27, 2026

P-Cymene → 5,5-dimethyl-10-hydroxy-8-methyl-5H-[1]benzopyrano[3,4-d]pyridine

https://huagongshe.com/reaction/1658072

Reaction equation

Participants

RoleNameHCIDCharge
ReactantP-CymeneHCID 7463—
Reactant2-benzyl-10-hydroxy-5,5,8-trimethyl-1,2,3,4-tetrahydro-5H[1]benzopyrano[3,4-d]pyridineHCID 21532612—
CatalystPalladiumHCID 23938—
Product5,5-dimethyl-10-hydroxy-8-methyl-5H-[1]benzopyrano[3,4-d]pyridineHCID 20287837—

Reaction Steps

Reaction of 2-benzyl-10-hydroxy-5,5,8-trimethyl-1,2,3,4-tetrahydro-5H[1]benzopyrano[3,4-d]pyridine (100 mg., U.S. Pat. No. 3,535,327) with Pd/C in boiling cymene gives 10-hydroxy-5,5,8-trimethyl-5H[1]benzopyrano[3,4-d]pyridine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03962448
Source datasetuspto-grants-1976_06
ORD IDord-30da125517fe4424b733ceeeeeb4de79
Source noteuspto-grants-1976_06