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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1438753Generated: November 3, 2026

1-Methyl-1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acid → 1,9-Dimethyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl ester

https://huagongshe.com/reaction/1438753

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1-Methyl-1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acidHCID 10490571—
Reactant1-Methyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl esterHCID 53835584—
Product1,9-Dimethyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl esterHCID 54332845—

Reaction Steps

Similarly, the replacement of 1-methyl-1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acid by an equivalent amount of 1-methyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl ester, described in Example 3, affords 1,9-dimethyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl ester.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04056538
Source datasetuspto-grants-1977_11
ORD IDord-3edeebb54be740788b000ed5a297c532
Source noteuspto-grants-1977_11