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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1657613Generated: October 29, 2026

8,9-dimethoxy-1,2,3,4-tetrahydro-5H-chromeno[3,4-c]pyridin-5-one → 1,2,3,4-Tetrahydro-8,9-dimethoxy-3-(1-methyl-2-morpholinoethyl)-5H-[1]benzopyrano[3,4-c]pyridin-5-one

https://huagongshe.com/reaction/1657613

Reaction equation

Participants

RoleNameHCIDCharge
Reactant8,9-dimethoxy-1,2,3,4-tetrahydro-5H-chromeno[3,4-c]pyridin-5-oneHCID 10825289—
Reactant4-(2-Chloropropyl)morpholineHCID 15104445—
Product1,2,3,4-Tetrahydro-8,9-dimethoxy-3-(1-methyl-2-morpholinoethyl)-5H-[1]benzopyrano[3,4-c]pyridin-5-oneHCID 21447170—

Reaction Steps

In the same way described in Example 5, .02 m of 1,2,3,4-tetrahydro-8,9-dimethoxy-5H-[1]benzopyrano[3,4-c]pyridin-5-one was alkylated with N-(2-chloropropyl)morpholine to give, after recrystallization from 95% EtOH 1.3 g of product; mp 228°-230°C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03961057
Source datasetuspto-grants-1976_06
ORD IDord-f5675f8c030f49c3975c51a1da83f506
Source noteuspto-grants-1976_06