Reference of 1004-40-6 ,Some common heterocyclic compound, 1004-40-6, molecular formula is C4H5N3OS, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
General procedure: A mixture of arylidene malonic acids 2a-g (10 mmol), uracil compound 1 (10 mmol) in 15 ml nitrobenzene was stirred at 150oC for 3.0 to 4.5 h. After accomplishment of reaction (observed via TLC), the reaction mixture was cooled to room temperature and extra solvent was evaporated under vacuum. The performed solid was purified by recrystalliza-tion from methanol to afford pyrido[2,3-d]pyrimidines 6 in good yields. 2.1.2.1. 5-(4-hydroxyphenyl)-2-thioxo-2,3-dihydropyrido[2, 3-d]pyrimidine-4,7-dione 6a Yellowish white powder. Yield = 80%. Mp = 216 – 219C. IR (cm-1), 3421 (OH), 3335, 3269, 3189 (3NH), 1671 (C = O amide);1H NMR (500 MHz, DMSO-d6) delta 12.88 (s, 1H, NH exchangeable with D 2 O), 11.87 (s, 1H,NH ex-changeable with D 2 O), 10.62 (s, 1H, NH exchangeable with D 2 O), 8.67 (s, 1H, OH exchangeable with D 2 O), 7.34 (d, J = 9.0 Hz, 2H), 6.80 (d, J = 9.0 Hz, 2H), 6.27 (s, 1H, H3 Pyridine). 13C NMR (125 MHz, DMSO-d6) delta 175.38, 164.67, 157.40, 156.29, 155.85, 153.03, 131.12, 130.17, 114.18, 110.58, 86.48; MS (m/z) = 287, [M+1] = 288; Anal. Calcd for C 13 H 9 N 3 O 3 S: C, 54.35; H, 3.16; N, 14.63. Found: C, 53.87; H, 3.67; N, 15.17.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 1004-40-6, 6-Amino-4-hydroxy-2-mercaptopyrimidine, other downstream synthetic routes, hurry up and to see.
Reference:
Article; Al-Otaibi, Jamelah S.; Ibrahim, Diaa A.; El Gogary, Tarek M.; Letters in drug design and discovery; vol. 15; 12; (2018); p. 1240 – 1251;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia