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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1731073Generated: October 27, 2026

Phthalimide → 8-chloro-1-(2-phthalimidoethyl)-6-(2-pyridyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepine

https://huagongshe.com/reaction/1731073

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhthalimideHCID 6809—
ReactantTriphenylphosphineHCID 11776—
Reactantethyl N-ethoxycarbonyliminocarbamateHCID 220568—
Reactant8-chloro-1-(2-hydroxyethyl)-6-(2-pyridyl)-4H-s-triazolo-[4,3-a][1,4]benzodiazepineHCID 21494814—
Solvent1,4-DioxaneHCID 31275—
Product8-chloro-1-(2-phthalimidoethyl)-6-(2-pyridyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepineHCID 21494838—

Reaction Steps

In the manner given in Example 2, 8-chloro-1-(2-hydroxyethyl)-6-(2-pyridyl)-4H-s-triazolo[4,3-a][1,4]-benzodiazepine in dioxane is treated with phthalimide, triphenylphosphine and subsequently with diethyl azodicarboxylate to give 8-chloro-1-(2-phthalimidoethyl)-6-(2-pyridyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03994941
Source datasetuspto-grants-1976_11
ORD IDord-d05d09ecc0bb408ab8a5236cab9927d9
Source noteuspto-grants-1976_11