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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2256131Generated: October 30, 2026

3,4-Dichloroaniline → HCID 22736823, compound

https://huagongshe.com/reaction/2256131

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3,4-DichloroanilineHCID 7257—
Reactant7-Amino-4-methylthiopyrido[4,3-d]pyrimidineHCID 10442562—
ProductHCID 22736823HCID 2273682364%

Reaction Conditions

Temperature165 °C

Reaction Steps

A mixture of 7-amino-4-methylthiopyrido[4,3-d]pyrimidine (247 mg, 1.29 mmol) and 3,4-dichloroaniline (1.50 g, 9.26 mmol) is stirred at 165° C. for 30 min. The resulting product is chromatographed over silica gel (7-8% MeOH/CH2Cl2) to give 7-amino-4-(3,4-dichloroanilino)pyrido[4,3-d]pyrimidine (252 mg, 64%) as a pale yellow solid. 1H NMR (DMSO) δ 9.97 (1H, brs), 9.34 (1H, s), 8.47 (1H, s), 8.29 (1H, brs), 7.86 (1H, brd, J=8.6 Hz), 7.62 (1H, d, J=8.8 Hz), 6.70 (2H, brs), 6.46 (1H, s).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05654307
Source datasetuspto-grants-1997_08
ORD IDord-392cefbc972540f4850d46199da08f74
Source noteuspto-grants-1997_08