In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 4595-61-3, name is Pyrimidine-5-carboxylic acid, the common compound, a new synthetic route is introduced below. name: Pyrimidine-5-carboxylic acid
To a solution of pyrimidine-5-carboxylic acid (1.38 g, 11.13 mmol, 1.1equiv; [CAS RN 4595-61-3]) in DMF (44 mL) was added 3-(4-trifluoromethyl-phenyl)-prop-2-yn-1-ol(2.02 g, 10.1 mmol, 1.0 equiv; [CAS RN 173546-21-9]), 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide) hydrochloride (2.33 g, 12.1 mmol, 1.2 equiv; [CASRN 25952-53-8]) and 4-dimethylaminopyridine (0.25 g, 2.0 mmol, 0.2 equiv). The reaction mixturewas stirred at rt for 2 h and then concentrated by evaporation under reducedpressure. A sat. solution of NaHCO3 (50 mL) was added and the crude productextracted with DCM (3 x 100 mL). The combined organic layers were dried over MgSO4,concentrated under reduced pressure and the product purified by MPLC elutingwith a gradient of DCM / methanol. The title compound was isolated as whitesolid (2.36 g, 76percent).?1H NMR (600 MHz, CDCl3): d = 5.23 (s, 2H), 7.57 ? 7.60 (m, 4H), 9.35 (s, 2H), 9.41 (s, 1H). 13CNMR (150 MHz, CDCl3): d = 54.0, 84.5, 86.1, 123.9 (q, JCF= 270.6 Hz), 123.9 (br s), 125.5 (q, JCF= 3.7 Hz), 125.7 (d, JCF =1.4 Hz), 131.0 (q, JCF =32.6 Hz), 132.3, 158.3, 161.9, 163.1. 19F NMR (280MHz, CDCl3): d = -63.0. HRMS (ESI+): m/z [M]+ calcd for C15H9F3N2O2:306.0616, found: 306.0610.
The synthetic route of 4595-61-3 has been constantly updated, and we look forward to future research findings.
Reference:
Article; Martin, Rainer E.; Lenz, Mario; Alzieu, Thibaut; Aebi, Johannes D.; Forzy, Liliane; Tetrahedron Letters; vol. 54; 49; (2013); p. 6703 – 6707;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia