Hydrochloric Acid → Ethyl 2-methylpropanimidate--hydrogen chloride (1/1)

A solution of 138.2 g (2 mol) of isobutyronitrile in 101.2 g (2.2 mol) of ethanol cooled to 0° C. was saturated with anhydrous HCl gas (total vol. of HCl=1.5 L: 2.2 mol) at a rate of 1.5 L/min for 35 minutes. The resulting mixture was tightly capped and stored in a refrigerator (-5° C.) for 5 days and then stirred at room temperature for 18 hours. The solid formed was removed by filtration and the filtrate was poured into 2 L of anhydrous ether with stirring and the resulting reaction mixture was stirred at 0°-5° C. for 30 minutes. The precipitated solid was filtered, washed with anhydrous ether, and dried in a vacuum oven (over KOH) to afford 150 g (98.9%) of 1-imino-1-ethoxyisobutane hydrochloride.

1. customThe resulting mixture was tightly capped
2. customThe solid formed
3. customwas removed by filtration
4. additionthe filtrate was poured into 2 L of anhydrous ether
5. stirringwith stirring
6. customthe resulting reaction mixture
7. stirringwas stirred at 0°-5° C. for 30 minutes
8. filtrationThe precipitated solid was filtered
9. washwashed with anhydrous ether
10. dry with materialdried in a vacuum oven (over KOH)

ORD record

ord-060dc6d0bf5f44ccb394a22b05a719da

Source dataset

uspto-grants-1995_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05380729