Hydrochloric Acid → HCID 59102458, compound

Temperature

0 °C

To a solution of 2-chloro-3-methylbenzoic acid (1.71 g, 10.0 mmol) in anhydrous tetrahydrofuran (10 ml), at 0° C. and under nitrogen, was added methyllithium (1.6M in diethyl ether, 13.1 ml, 21.0 mmol), via syringe. The reaction mixture was stirred at 0° C. for 30 min and then allowed to warm to room temperature over 1 h. To the reaction mixture was added cold hydrochloric acid (1M, 100 ml) and dichloromethane (110 ml). The mixture was adjusted to pH 7 by addition of saturated aqueous sodium hydrogen carbonate solution and the two layers were separated. The aqueous layer was extracted with further dichloromethane and the combined extracts were dried (MgSO4) and concentrated in vacuo to give the title compound (1.19 g).

1. temperatureto warm to room temperature over 1 h
2. customthe two layers were separated
3. extractionThe aqueous layer was extracted with further dichloromethane
4. dry with materialthe combined extracts were dried (MgSO4)
5. concentrationconcentrated in vacuo

ORD record

ord-0bd6a4aabd8c4fcba1238818b2e155b5

Source dataset

uspto-grants-2009_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07547718B2