Methyl 4-fluoro-2-methylbenzoate Chemical Properties

Boiling point:

206℃

Density 

1.137

Flash point:

77℃

storage temp. 

Sealed in dry,Room Temperature

form 

Liquid

color 

Colorless

Safety Information

HS Code 

2916399090

Methyl 4-fluoro-2-methylbenzoate Usage And Synthesis

Chemical Properties

off-white powder

Uses

Methyl 4-fluoro-2-methylbenzoate is an impurity of baloxavir and can be used for new drug application and research.

Synthesis

Step 1. Synthesis of methyl 4-fluoro-2-methylbenzoate: 4-fluoro-2-methylbenzoic acid (50 g, 324.38 mmol) was mixed with thionyl chloride (SOCl2, 77 g, 648.76 mmol) in methanol (200 mL), and heated to reflux for 3 hours. After completion of the reaction, the reaction mixture was concentrated under reduced pressure to afford methyl 4-fluoro-2-methylbenzoate as a brown oil (52 g, 95% yield). The product was characterized by 1H-NMR (300 MHz, CDCl3): δ 7.92-7.98 (m, 1H), 6.88-6.95 (m, 2H), 3.90 (s, 3H), 2.61 (s, 3H).

References

[1] Patent: US2012/277224, 2012, A1. Location in patent: Page/Page column 60
[2] Patent: WO2010/69966, 2010, A1. Location in patent: Page/Page column 78-79
[3] Patent: US6342504, 2002, B1. Location in patent: Page column 119
[4] Bioorganic and Medicinal Chemistry Letters, 2007, vol. 17, # 24, p. 6707 - 6713
[5] Bioorganic and Medicinal Chemistry Letters, 2008, vol. 18, # 5, p. 1628 - 1631

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