ChemicalBook CAS DataBase List 2-Phenylethylamine hydrochloride

2-Phenylethylamine hydrochloride synthesis

12synthesis methods

Product Name:2-Phenylethylamine hydrochloride
CAS Number:156-28-5
Molecular formula:C8H12ClN
Molecular Weight:157.64

In a nitrogen environment, add the aliphatic nitro derivatives (0.6mmol), pinacol borane (3.6mmol, 6.0equiv), tetrahydrofuran (2mL), triethylboron (5mol%), and potassium tert-butoxide (5mol %) into a 10mL sealed tube and then place it in a 100 oil bath with heating and stirring for 24 hours. At the end of the reaction, add 2mL of 1M hydrochloric acid aqueous solution to the reaction solution and stir at room temperature for 6h. Finally, 2-Phenylethylamine hydrochloride is obtained by filtration.

63-91-2 Synthesis

63-91-2
930 suppliers
$10.00/100G

156-28-5
209 suppliers
$21.00/100g

Yield:156-28-5 78%

Reaction Conditions:

Stage #1: L-phenylalaninewith (R)-Carvone in propan-1-ol at 190; under 11251.1 Torr; for 0.0833333 h;Sealed tube;
Stage #2: with hydrogenchloride in propan-1-ol;water at 190; for 0.0833333 h;

Steps:

General “One-Pot” Procedure for the Decarboxylation of Amino Acids

General procedure: General “One-Pot” Procedure for the Decarboxylation of Amino Acids [0045] A magnetic stir bar, 3 mL of n-PrOH, 10 mmol of R-Carvone, and 5 mmol of amino acid were charged to a pressure vessel. The vessel was heated from room temperature to 190° C. over 5 min with stirring. If necessary the reaction vessel was maintained at 190° C. for additional time until the slurry became clear. The vessel was allowed to cool to below the solvent boiling point, carefully vented to release evolved CO₂, and 10 mL of 2M HCl was added. The vessel was heated to 190° C. over 5 min with stirring and allowed to cool. The aqueous reaction mixture was washed three times with 25 mL of ether and water solvent distilled off from the hydrochloride salt. The hydrochloride salt was transferred to a vacuum oven and dried overnight at 150° C. and 10 Torr. The hydrochloride salt was then weighed and analyzed via IR and NMR.; 2-phenylethylamine hydrochloride δ_H2.82 2H t J=8, 3.10 2H t J=8, 7.12-7.26 5H m; δ_C32.73, 40.55, 127.30, 128.88, 163.03, 170.53

References:

US2014/275569,2014,A1 Location in patent:Page/Page column 0045; 0057; 0066; 0067