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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1044092Generated: October 30, 2026

Ammonium Chloride → 2'-chloro-9'-cyclopentyl-8',9'-dihydrospiro[cyclobutane-1,7'-pyrimido[4,5-b][1, 4]diazepin]-6'(5'H)-one

https://huagongshe.com/reaction/1044092

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
Reactant1-{[(2-Chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-methyl}-cyclobutanecarboxylic acid methyl esterHCID 58153885—
CatalystIronHCID 23925—
SolventEthanolHCID 702—
Product2'-chloro-9'-cyclopentyl-8',9'-dihydrospiro[cyclobutane-1,7'-pyrimido[4,5-b][1, 4]diazepin]-6'(5'H)-oneHCID 57970008—

Reaction Steps

Reaction of 1-{[(2-chloro-5-nitro-pyrimidin-4-yl)-cyclopentyl-amino]-methyl}-cyclobutanecarboxylic acid methyl ester with NH4Cl and iron powder in ethanol gave 2′-chloro-9′-cyclopentyl-8′,9′-dihydrospiro[cyclobutane-1,7′-pyrimido[4,5-b][1,4]diazepin]-6′(5′H)-one, isolated directly.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08563542B2
Source datasetuspto-grants-2013_10
ORD IDord-60a48ba26416438ba5d08a206c6775a4
Source noteuspto-grants-2013_10