Ethyl4-amino-2-hydroxypyrimidine-5-carboxylate

Intermediate 2 was synthesized by adding 400 ml of diethyl ether and 500 ml of tetrahydrofuran to a 2500 ml round bottom flask, followed by adding 30 ml of sodium tert-butoxide. After stirring, 183 g (1 mole) of intermediate 1 was added, (0.1 mol) of sodium nanometer magnesia powder, heated to 75 ° C for 2.5 hours, quenched, cooled and collected by filtration to obtain a yellow solid.The resulting solid was dissolved in 500 ml of water and water was added with stirring until the yellow solid was completely dissolved.With dilute hydrochloric acid (from concentrated hydrochloric acid and water volume ratio of 1: 3 prepared) acidification to pH = 6 ~ 7, a precipitate generated, filter white solid collection, and washing with a small amount of acetone.Dried to give intermediate 2 as a white powder solid, 168.4 g, yield 92percent.The intermediate 3 was prepared by mixing 780 ml of a NaOH solution having a mass fraction of 10%, adding it to a 2500 ml round bottom flask, heating to 70 C, and stirring the intermediate 91.5 (0.5 mol) for 30 minutes.Rapid cooling to room temperature, and then add hydrochloric acid pH = 5, a white precipitate generated, suction, washing, drying, 5-carboxy cytosine, white powdery solid, 74.9 grams, the yield was 96.8%.Intermediate 2 was synthesized by adding 400 ml of diethyl ether and 500 ml of tetrahydrofuran to a 2500 ml round bottom flask, followed by adding 30 ml of sodium tert-butoxide. After stirring, 183 g (1 mole) of intermediate 1 was added, (0.1 mol) of sodium nanometer magnesia powder, heated to 75 C for 2.5 hours, quenched, cooled and collected by filtration to obtain a yellow solid.The resulting solid was dissolved in 500 ml of water and water was added with stirring until the yellow solid was completely dissolved.With dilute hydrochloric acid (from concentrated hydrochloric acid and water volume ratio of 1: 3 prepared) acidification to pH = 6 ~ 7, a precipitate generated, filter white solid collection, and washing with a small amount of acetone.Dried to give intermediate 2 as a white powder solid, 168.4 g, yield 92%.

Molecular Weight:183.16
XLogP3:-0.2
Hydrogen Bond Donor Count:2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:3
Exact Mass:183.06439116
Monoisotopic Mass:183.06439116
Topological Polar Surface Area:93.8
Heavy Atom Count:13
Complexity:306
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes