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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2238586Generated: October 31, 2026

4-Hydroxy-N,N,1,2-tetramethyl-1H-benzimidazole-6-carboxamide → 4-(3,4-Dihydro-1H-isochromen-4-yloxy)-N,N,1,2-tetramethyl-1H-benzimidazole-6-carboxamide

https://huagongshe.com/reaction/2238586

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-Hydroxy-N,N,1,2-tetramethyl-1H-benzimidazole-6-carboxamideHCID 53471016—
Reactant4-ChloroisochromanHCID 68688409—
Product4-(3,4-Dihydro-1H-isochromen-4-yloxy)-N,N,1,2-tetramethyl-1H-benzimidazole-6-carboxamideHCID 5930389112%

Reaction Steps

The title compound was prepared as a white solid in 12% yield (38 mg) from 4-hydroxy-N,N,1,2-tetramethyl-1H-benzimidazole-6-carboxamide (0.20 g, 0.85 mmol, WO 2004054984) and 4-chloro-3,4-dihydro-1H-isochromene (0.20 g, 1.2 mmol, STEP 1) by the same manner in STEP 1 of Example 1:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07718809B2
Source datasetuspto-grants-2010_05
ORD IDord-d8b1309e774c46b3b62c016aa4c1ac79
Source noteuspto-grants-2010_05