Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1967614Generated: November 3, 2026

Diazald → HCID 53380072, compound

https://huagongshe.com/reaction/1967614

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiazaldHCID 6628—
ReactantPotassium HydroxideHCID 14797—
ReactantHCID 21225595HCID 21225595—
ReactantHCID 67387399HCID 67387399—
SolventMethanolHCID 887—
ProductHCID 53380072HCID 53380072—

Reaction Steps

The compound was synthesized starting from KOH (15 eq in water), diazald (9 eq), ethylene glycol/Et2O (1/5 v/v, 30 ml), 1-(1H-Benzo[d]imidazol-6-yl)-4-ethyl-5-(2,3-difluorophenyl)-3-hydroxy-1H-pyrrol-2(5H)-one (1.2 g, 2.81 mmol, 1 eq) and MeOH (10 ml), the product was further purified by preparative HPLC; yield: 0.085 g (8.2%); MS m/z: 370.1 [M+H]+; 1H-NMR: (400 MHz, DMSO-D6) δ: 1.01 (t, 3H), 1.94 (m, 1H), 2.39 (m, 1H), 3.96 (s, 3H), 6.24 (s, 1H), 7.12 (s, 1H), 7.55-7.26 (m, 3H), 7.67 (s, 1H), 8.17 (s, 1H), 12.43 (s, 1H); HPLC (METHOD [A]): rt 13.32 min (100%)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08420828B2
Source datasetuspto-grants-2013_04
ORD IDord-98d8aad6265c48d48fcafc0c7f7b88bb
Source noteuspto-grants-2013_04