Dihydro-1,3-dimethyl-2-thioxo-4,6(1H,5H)-pyrimidinedione

Base Information

• Chemical Name: Dihydro-1,3-dimethyl-2-thioxo-4,6(1H,5H)-pyrimidinedione
• CAS No.: 3158-63-2
• Molecular Formula: C6H8N2O2S
• Molecular Weight: 172.208
• Hs Code.: 2933599090
• Mol file: 3158-63-2.mol

Synonyms:N,N'-Dimethyl-2-thiobarbituric acid; Dihydro-1,3-dimethyl-2-thioxo-4,6

Chemical Property of Dihydro-1,3-dimethyl-2-thioxo-4,6(1H,5H)-pyrimidinedione

Chemical Property:

• Melting Point: 183℃
• Boiling Point: 238℃
• PKA: 4.69±0.20(Predicted)
• Flash Point: 98℃
• PSA: 72.71000
• Density: 1.40
• LogP: -0.53240

Purity/Quality:

99%, ^*data from raw suppliers

1,3-Dimethyl-2-thiobarbituricacid ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

Technology Process of Dihydro-1,3-dimethyl-2-thioxo-4,6(1H,5H)-pyrimidinedione

There total 3 articles about Dihydro-1,3-dimethyl-2-thioxo-4,6(1H,5H)-pyrimidinedione which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 90.0%

→ 1,3-dimethylthiobarbituric acid (3158-63-2)

Guidance literature:

With piperidine; In tetrahydrofuran;

Reference yield:

N,N-dimethylthiourea (534-13-4) + diethyl malonate (105-53-3) → 1,3-dimethylthiobarbituric acid (3158-63-2)

Guidance literature:

DOI:10.1023/A:1014821016904

Reference yield:

N,N-dimethylthiourea (534-13-4) + diethyl 2-ethoxymethylenemalonate (87-13-8) → 1,3-dimethylthiobarbituric acid (3158-63-2)

Guidance literature:

With hydrogenchloride; In ethanol; water; for 4h; Heating;

DOI:10.1515/HC.2007.13.4.229

upstream raw materials:

N,N-dimethylthiourea

diethyl malonate

diethyl 2-ethoxymethylenemalonate

Downstream raw materials:

5-(4-methoxy-benzylidene)-1,3-dimethyl-2-thioxo-dihydro-pyrimidine-4,6-dione

5-(3,4-dimethoxy-benzylidene)-1,3-dimethyl-2-thioxo-dihydro-pyrimidine-4,6-dione

5-[(E)-3-(4-Dimethylamino-phenyl)-allylidene]-1,3-dimethyl-2-thioxo-dihydro-pyrimidine-4,6-dione

Refernces

• 1、 Khalafy, Jabbar,Rimaz, Mehdi,Rabiei, Hossein,Panahi, Leila. "An efficient one-pot protocol for regioselective synthesis of 3-aryl-6,8-dialkyl-7-thioxo-7,8-dihydropyrimido[4,5-c ] pyridazine-5(6 H)-ones". . p. 395 - 406. Retrieved 2013/09/23.
• 2、 Krasnov,Kartsev,Yurova. "Chemical modification of plant alkaloids. 2. Reaction of cotarnine with barbituric acid derivatives and structure of 5-dihydrocotarnylbarbituric acids". . p. 543 - 550. Retrieved 2007/10/03.