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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1665307Generated: October 30, 2026

2-Benzimidazolecarboxylic acid → HCID 57661918, compound

https://huagongshe.com/reaction/1665307

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Benzimidazolecarboxylic acidHCID 233240—
ReactantSpiro[naphtho[1,2-b][1,4]oxathiine-2,4'-piperidine]-5,6-dioneHCID 57661820—
ProductHCID 57661918HCID 57661918—

Reaction Steps

Compound 74 was synthesized using spiro[naphtho[1,2-b][1,4]oxathiine-2,4′-piperidine]-5,6-dione, 1H-benzimidazole-2-carboxylic acid and conditions outlined in procedure O. M.p.=266-268° C.; 400 MHz 1H NMR (DMSO-d6) δ: 13.17 (s, 1H), 7.92 (m, 2H), 7.76 (m, 2H), 7.56 (m, 2H), 7.24-7.35 (m, 2H), 5.46 (d, 1H), 4.48 (d, 1H), 3.82 (t, 0H), 3.33 (m, 1H), 3.18 (d, 2H), 2.17 (m, 2H), 1.85-2.04 (m, 2H); LCMS=446 [M+H].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08039503B2
Source datasetuspto-grants-2011_10
ORD IDord-84cf142c67dc41aa9e1f205f0f988309
Source noteuspto-grants-2011_10