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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 441608Generated: October 30, 2026

Potassium Hydroxide → Thiopyrano[3,4-b]indole-1-acetic acid, 1,3,4,9-tetrahydro-1-methyl-

https://huagongshe.com/reaction/441608

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium HydroxideHCID 14797—
Reactant1-Methyl-1,3,4,9-tetrahydrothiopyrano[3,4-b]indole-1-acetic acid methyl esterHCID 53835584—
ProductThiopyrano[3,4-b]indole-1-acetic acid, 1,3,4,9-tetrahydro-1-methyl-HCID 12255469—

Reaction Steps

This ester is then treated with aqueous alcoholic KOH in the manner described for the esters in Examples 1 and 2 to afford the title compound, m.p. 3/4° - 149° C., nmr (CDCl3) δ1.86 (S, 3H), 3.06, 8.12 (6H), 7.35 (multiplet, 4H), 8.71 (1H), 10.31 (1H), after recrystallization from benzene-hexane.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04041169
Source datasetuspto-grants-1977_08
ORD IDord-684917f7c17e4442ac306171ea800cf3
Source noteuspto-grants-1977_08