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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 441609Generated: October 29, 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/441609

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 numberUS04041169
Source datasetuspto-grants-1977_08
ORD IDord-c949e58968fd4147a606a7761ffc32fd
Source noteuspto-grants-1977_08