Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

(4-OXO-PIPERIDIN-1-YL)-ACETIC ACID HYDROCHLORIDE synthesis

2synthesis methods
-

Yield:218772-96-4 92.2%

Reaction Conditions:

with potassium carbonate in water at 60 - 75; for 6 h;Reagent/catalyst;Temperature;

Steps:

1 Example 1: Preparation of 4-piperidone-1-acetic acid (III)

In a 500 ml four-necked flask equipped with a stirring, thermometer, reflux condenser, and constant pressure dropping funnel,Add 60 grams of water, 34.5 grams (0.25 moles) of potassium carbonate,21.8 g (0.23 mol) of chloroacetic acid,Heat, keep between 60-65 ,A solution of 27.1 g (0.2 mole) of piperidin-4-one hydrochloride and 60 g of water was added dropwise,The addition was completed in about 2 hours, and then the reaction was stirred at 70-75 ° C for 4 hours.Cool to 20-25 ° C, 30wt% hydrochloric acid acidification system pH 2.5-3.0, filter, dry,There was obtained 28.95 g of 4-piperidone-1-acetic acid as a white solid,The yield was 92.2%, and the purity of the liquid phase was 99.3%.

References:

CN110483384,2019,A Location in patent:Paragraph 0050-0051; 0066-0067

(4-OXO-PIPERIDIN-1-YL)-ACETIC ACID HYDROCHLORIDE Related Search: