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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 532984Generated: October 25, 2026

5-(But-3-yn-2-yl)-1,2,3-trimethoxybenzene → 2,4-Diamino-5-(3-(3,4,5-trimethoxyphenyl)but-1-ynyl)pyrimidine

https://huagongshe.com/reaction/532984

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-(But-3-yn-2-yl)-1,2,3-trimethoxybenzeneHCID 16110325—
Reactant5-Iodopyrimidine-2,4-diamineHCID 16110335—
Product2,4-Diamino-5-(3-(3,4,5-trimethoxyphenyl)but-1-ynyl)pyrimidineHCID 1611033890%

Reaction Steps

2,4-Diamino-5-iodopyrimidine (236 mg) was allowed to react with 5-(But-3-yn-2-yl)-1,2,3-trimethoxybenzene (440 mg) as per the general procedure to afford 2,4-Diamino-5-(3-(3,4,5-trimethoxyphenyl)but-1-ynyl)pyrimidine as a yellow powder (295 mg, 90%): Rf=0.29 (9:1, CHCl3:MeOH); mp=220-222° C.; 1H NMR (DMSO-d6) δ 7.85 (s, 1H), 6.75 (s, 2H), 6.28 (s, 2H), 3.99 (q, J) 6.8 Hz, 1H), 3.78 (s, 6H), 3.63 (s, 3H), 1.50 (d, J) 7.1 Hz, 3H); 13C NMR (DMSO-d6) δ 163.7, 152.8, 139.3, 136.0, 104.2, 104.1, 97.9, 76.2, 60.0, 60.0, 55.9, 55.8, 32.3, 24.3; Anal. (C17H20N4O3) C, H, N.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08853228B2
Source datasetuspto-grants-2014_10
ORD IDord-c745a98144d44c35abc46821fe760570
Source noteuspto-grants-2014_10