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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2075799Generated: October 31, 2026

Triethylamine → HCID 53257797, compound

https://huagongshe.com/reaction/2075799

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
Reactant1-MethylpiperazineHCID 53167—
Reactant4-Chloro-5,6,7,8-tetrahydroquinazolin-2-amineHCID 13707820—
SolventEthanolHCID 702—
ProductHCID 53257797HCID 5325779723%

Reaction Steps

A solution of 4-chloro-5,6,7,8-tetrahydro-quinazolin-2-ylamine (100 mg, 0.55 mmol), N-methyl piperazine (91 uL, 1.5 mmol) and Et3N (140 uL, 1.1 mmol) in EtOH (2 ml) was heated at 70° C. for 16 h. The mixture was cooled to rt and concentrated, and the crude residue was purified (2 M NH3 in MeOH/CH2Cl2) to yield a white solid (31 mg, 23%). MS (ESI): mass calcd. for C13H21N5, 247.3; m/z found, 248.2 [M+H]+. 1H NMR (MeOD): 3.30-3.23 (m, 4H), 3.21 (dt, J=3.3, 1.6, 1H), 2.49 (t, J=6.7, 2H), 2.47-2.41 (m, 4H), 2.36 (t, J=5.9, 2H), 2.23 (s, 3H), 1.77-1.67 (m, 2H), 1.62-1.52 (m, 2H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07923451B2
Source datasetuspto-grants-2011_04
ORD IDord-50a58bbf5ae84e4f94239e5ce5548545
Source noteuspto-grants-2011_04