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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1178248Generated: October 26, 2026

Benzylamine → N-benzyl-4-(3-oxo-1,3-dihydro-2H-pyrazolo[4,3-c]cinnolin-2-yl)benzamide

https://huagongshe.com/reaction/1178248

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzylamineHCID 7504—
ReactantDiisopropylethylamineHCID 81531—
ReactantMethanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 2733084—
Reactant4-(3-oxo-1,3-dihydro-2H-pyrazolo[4,3-c]cinnolin-2-yl)benzoic acidHCID 58974914—
SolventDimethylformamideHCID 6228—
ProductN-benzyl-4-(3-oxo-1,3-dihydro-2H-pyrazolo[4,3-c]cinnolin-2-yl)benzamideHCID 58974908—

Reaction Steps

4-(3-oxo-1,3-dihydro-2H-pyrazolo[4,3-c]cinnolin-2-yl)benzoic acid (52 mg, 0.17 mmol) was mixed with DMF (2 ml). Diisopropylethylamine (22 mg, 29 μl, 0.17 mmol) and benzylamine (18.2 mg, 18.6 μl, 0.17 mmol) were added followed by HBTU (64.5 mg, 0.17 mmol). The mixture was stirred at room temperature for 4 h. The product was purified by preparative HPLC. The title compound was isolated as a red solid (6.6 mg, 0.02 mmol, 10%). LCMS: m/z 396 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07276505B2
Source datasetuspto-grants-2007_10
ORD IDord-c46c1471c124473ab4aeb695656b4660
Source noteuspto-grants-2007_10