3-chloro-1-pyrrolidin-1-ylpropan-1-one

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1-(β-Chloropropionyl) pyrrolidine (16 grams; 0.1 mol), potassium thiocyanate (18 grams; 0.2 mol) and ethanol (100 ml) are charged into a glass reaction flask equipped with a mechanical stirrer and reflux condenser. The reaction mixture is then heated at reflux for a period of about 6 hours. After this time the reaction mixture is cooled and filtered. The filtrate is stripped of solvent and the residue is extracted with benzene. The benzene extract is evaporated under reduced pressure to yield 1-(β-thiocyanopropionyl) pyrrolidine as a residue. equipped with a mechanical stirrer reflux condenser The reaction mixture is then heated at reflux for a period of about 6 hours After this time the reaction mixture is cooled filtered the residue is extracted with benzene The benzene extract is evaporated under reduced pressure

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of pyrrolidine (35 grams; 0.5 mol) and triethylamine (50 grams; 0.5 mol) in benzene (500 ml) is placed in a glass reaction flask equipped with a mechanical stirrer and reflux condenser. β-Chloropropionyl chloride (64 grams; 0.5 mol) is then slowly added with stirring over a period of about 15 minutes. Stirring is continued for a period of about 30 minutes. After this time the reaction mixture is first filtered to remove triethylamine hydrochloride nd is the stripped of benzene to yield 1-(β-chloropropionyl) pyrrolidine. equipped with a mechanical stirrer reflux condenser Stirring is continued for a period of about 30 minutes After this time the reaction mixture is first filtered to remove triethylamine hydrochloride nd