N-(1-benzylpiperidin-4-ylidene)hydroxylamine

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

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

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

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: 18.9 g of 1-benzyl-4-oxopiperidine, 26.8 g of hydroxylamine hydrochloride, and 24.8 g of sodium acetate in 200 ml of ethanol are stirred for 8 hours.

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

Procedure: 18.9 g of 1-benzyl-4-oxopiperidine, 26.8 g of hydroxylamine hydrochloride, and 24.8 g of sodium acetate in 200 ml of ethanol are stirred for 8 hours.

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

Procedure: 18.9 g of 1-benzyl-4-oxopiperidine, 26.8 g of hydroxylamine hydrochloride, and 24.8 g of sodium acetate in 200 ml of ethanol are stirred for 8 hours.

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: 18.9 g of 1-benzyl-4-oxopiperidine, 26.8 g of hydroxylamide hydrochloride, and 24.8 g of sodium acetate in 200 ml of ethanol are stirred for 8 hours.

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Following a procedure of P. Brookes, et al., J. Chem. Soc., 3165 (1957), 1-benzyl-4-piperidinone (44.6 g, 0.234 mol) and hydroxylamine hydrochloride (14.0 g, 0.201 mol) are added to 140 ml of dry pyridine and the resulting mixture is heated to 100° C. in an oil bath for 3 hours. The resulting solid is cooled overnight, filtered and crystallized from 1 liter of ethanol. The product is collected as colorless needles, 38.17 g, in two groups with melting point of 225°-237° C., decomposed depending upon the rate of heating. The resulting solid is cooled overnight filtered crystallized from 1 liter of ethanol The product is collected as colorless needles, 38.17 g, in two groups with melting point of 225°-237° C. of heating