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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1731072Generated: October 27, 2026

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

https://huagongshe.com/reaction/1731072

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantPyclazolamHCID 20368150—
SolventO-XyleneHCID 7237—
Product8-chloro-1-(2-hydroxyethyl)-6-(2-pyridyl)-4H-s-triazolo-[4,3-a][1,4]benzodiazepineHCID 21494814—

Reaction Steps

In the manner given in Example 1, 8-chloro-methyl-6-(2-pyridyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepine in xylene is heated in an oil bath with repeated additions of portions of paraformaldehyde to give 8-chloro-1-(2-hydroxyethyl)-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-54044e0c58ec4a439e4d5fa1909f55c1
Source noteuspto-grants-1976_11