Methacrylic Acid → 2-Methyl-3-(trichlorogermyl)propanoic acid

Temperature

5 °C

84.7 ml (0.1 mol) of methacrylic acid was added dropwise over 5 minutes to 18 g (0.1 mol) of crude trichlorogermane which had been cooled to 5° C. in an ice bath. The mixture was stirred at the same temperature for one hour and then at room temperature for 1.5 hour. The precipitated crystal was filtered by suction, washed with 10ml of n-hexane which had been dried over potassium chloride for four times, dried by suction and kept in a desiccator containing phosphorus pentoxide at 65° C. for one hour with reducing the pressure by a vacuum pump which uses potassium hydroxide containing trap to obtain 17.03 g of crystalline 2-methyl-3-(trichlorogermyl)propionic acid:

1. waitat room temperature for 1.5 hour
2. filtrationThe precipitated crystal was filtered by suction
3. washwashed with 10ml of n-hexane which
4. dry with materialhad been dried over potassium chloride for four times
5. customdried by suction
6. customkept in a desiccator
7. additioncontaining phosphorus pentoxide at 65° C. for one hour

ORD record

ord-fa060339e57444e4b2f6d848d564565c

Source dataset

uspto-grants-1988_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04720564