Category: 330786-24-8

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. 330786-24-8, name is 3-(4-Phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine, molecular formula is C17H13N5O, 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. HPLC of Formula: C17H13N5O

a) 4-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]benzaldehyde 3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (2.0 g, 6.59 mmol) was mixed with 4-fluorobenzaldehyde (1.06 mL, 9.89 mmol), cesium carbonate (4.30 g, 13.19 mmol) in DMF (6 mL). The reaction mixture was heated at 86 C. overnight. After cooling to room temperature, the reaction mixture was poured onto ice water. The solid was collected by filtration to give 4-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]benzaldehyde (2.46 g, 92%). 1H NMR (CDCl3) delta 7.19 (m, 5H), 7.46 (m, 2H), 7.78 (d, J=8.64 Hz, 2H), 8.10 (d, J=8.70 Hz, 2H), 8.44 (s, 1H), 8.59 (d, J=8.70 Hz, 2H), 10.03 (s, 1H).

With the rapid development of chemical substances, we look forward to future research findings about 330786-24-8.

Reference:
Patent; Abbott Laboratories; US6921763; (2005); B2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Electric Literature of 330786-24-8, 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. 330786-24-8, name is 3-(4-Phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine, molecular formula is C17H13N5O, 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.

The solution of (S)-1-boc-3-methylsulfonyloxy piperidine (115.5 g) indimethylacetamide (300 ml) was added to the reaction mixture of 3-(4-phenoxyphenyl)- 1 H-pyrazolo[3 ,4-d]pyrimidine-4-amine (50 g), cesium carbonate(13.4 g) and potassium carbonate (108.3 g) in dimethylacetamide (450 ml) at 55C.The reaction mass was heated to 85C, stirred for 14h, filtered and concentrated.The concentrated mass was dissolved in 1:1 mixture of methanol-toluene (1250 ml)and added hydrochloric acid (117 ml; 18% w/v). The reaction mixture was stirredfor 6 h at 45C, separated the aqueous layer and concentrated under vacuum. The concentrated mass was stirred with methanol (100 ml) and ethyl acetate (625 ml), filtered the solid and dried to yield (R)-3-(4-phenoxyphenyl)-1-(piperidin-3-yl-1H- pyrazolo[3 ,4-d]pyrimidine-4-amine hydrochloride (59 g; 78.4%).HPLC Purity: 99.6%

According to the analysis of related databases, 330786-24-8, the application of this compound in the production field has become more and more popular.

Reference:
Patent; NATCO PHARMA LIMITED; MUDDASANI, Pullareddy; BUDIDETI, Shankar Reddy; MADALAPU, Veerababu; GATTU, Anitha; KONDA, Bala Ankireddy; NANNAPANENI, Venkaiah Chowdary; (20 pag.)WO2017/134684; (2017); A2;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Synthetic Route of 330786-24-8, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 330786-24-8, name is 3-(4-Phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine. A new synthetic method of this compound is introduced below.

Step 1 To a solution of 3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (300 mg, 1.0 mmole), triphenylphosphine (1.04 g, 3.96 mmole) and tert-butyl (2-hydroxyethyl)carbamate (238 mg, 1.5 mmoles) in THF (25 mL) was added DIAD (0.4 mL, 2 mmoles). The reaction was stirred for 5 hrs at room temperature and then water (30 mL) was added and extracted with ethyl acetate. The organic layers were combined, washed with aq. NaHCO3 and brine, then dried (Na2SO4), filtered and concentrated. The resulting tert-butyl (2-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)ethyl)carbamate was used without further purification.

At the same time, in my other blogs, there are other synthetic methods of this type of compound,330786-24-8, 3-(4-Phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine, and friends who are interested can also refer to it.

Reference:
Patent; Principia Biopharma Inc.; Goldstein, David Michael; US8673925; (2014); B1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia