Reference of 99420-75-4, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 99420-75-4, name is 5-Methylpyrimidine-2-carboxylic acid, molecular formula is C6H6N2O2, The compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
(0648) To a solution of 5-methylpyrimidine-2-carboxylic acid (1 g, 7.24 mmol) in DMF (72.4 mL) was added Nu,Omicron-dimethylhydroxylamine hydrochloride (0.777 g, 7.96 mmol). The mixture was cooled to 0 C and 1-propanephosphonic acid cyclic anhydride, (50 wt. % solution in EtOAc, 9.21 mL, 14.48 mmol) was added droppwise. The mixture was allowed to warm to 23 C overnight. LCMS indicated complete conversion to product. The mixture was then diluted with water, extracted with CHC13:IPA (3: 1) and washed with brine and a saturated aqueous NaHCC solution. The mixture was dried over Na2S04 concentrated in vacuo, and purified by silica gelchromatograph (0-100% Heptane:EtOAc) to yield Example 57.11 (0.7 g, 3.86 mmol, 53 % yield). NMR (500 MHz, CDC13) delta 8.61 – 8.69 (m, 2 H) 3.61 – 3.79 (m, 3 H) 3.27 – 3.47 (m, 3 H) 2.34 – 2.45 (m, 3 -ESI (pos.) m/z: 182.2 (M+H)+
While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 99420-75-4, 5-Methylpyrimidine-2-carboxylic acid.
Reference:
Patent; AMGEN INC.; DRANSFIELD, Paul John; HARVEY, James S.; MA, Zhihua; SHARMA, Ankit; (281 pag.)WO2019/89335; (2019); A1;,
Pyrimidine | C4H4N2 – PubChem,
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