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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1804639Generated: October 26, 2026

Ammonia → N-(10)-Ethylquinazoline

https://huagongshe.com/reaction/1804639

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantMethanolHCID 887—
Reactant2-(Propanoylamino)benzaldehydeHCID 22074303—
ProductN-(10)-EthylquinazolineHCID 3080902100%

Reaction Conditions

Temperature80 °C

Reaction Steps

A mixture of the title compound from Step A (1.4 g, 7.9 mmol) and 2M ammonia in methanol (40 ml, 80 mmol) was heated at 80° C. in a flask stoppered with a septa and vented with a 21 gauge needle, overnight. The mixture was cooled and evaporated to afford the title compound 1.39 g (100%). 1H NMR (CDCl3): 1.50 (t, J 7.6 Hz, 3H), 3.19 (q, J 7.6 Hz, 2H), 7.60 (d, J 7.4 Hz, 1H), 7.90 (m, 2H), 7.99 (d, J 8.5 Hz, 1H), 9.37 (d, J 8.5 Hz, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08354403B2
Source datasetuspto-grants-2013_01
ORD IDord-79e68e10f51c40a6aefe8910bf567923
Source noteuspto-grants-2013_01