Instituto Mexicano Del Petroleo

Rafael Martínez Palou

Eugenio Alejandro Flores Oropeza

Jorge Arturo Aburto Anell

Natalya Victorovna Likhanova

Juan De La Cruz Clavel López

Ricardo Cerón Camacho

Romeo Jesús Reyes Ávila

César Bernal Huicochea

Alba Adriana Vallejo Cardona

Diego Javier Guzmán Lucero

Jorge Froylán Palomeque Santiago

Mario Ramiréz De Santiago

Embodiments of the present invention provide for efficient methods and processes for preparing ionic amino acid esters from a specific synthesis route. The disclosed embodiments consist of a single reaction step: reacting a natural or synthetic unprotected amino acid with an aliphatic, branched or aromatic fatty alcohol of even or odd number of carbon atoms from 6 to 20 with or without unsaturation(s), in stoichiometric amounts, in the presence of an organic acid (HX) like carboxylate, mesylate, tosylate or sulfonate, employed as catalyst and under conventional heating (CC) of 1 to 3 hours at a temperature in the range of approximately 60 to 150&#xb0; C. and pressure the range of approximately 0 to approximately 250 psi; the product obtained is cooled and recrystallized from ethanol.

Process for obtaining ionic amino acid esters

A process for recovering ionic liquids comprising the steps of: providing a first ionic liquid mixture, the first ionic liquid having a halogen metallate anion, the mixture containing an organic solvent; adjusting the pH of the mixture to pH 7-10 by the addition of a base to form a first precipitate; separating the first precipitate from the mixture; removing the organic solvent from the first mixture to form a second precipitate and separating the second precipitate from the first mixture; acidifying the resulting mixture to pH 2-7 by the addition of an acid; and drying the mixture to obtain a second ionic liquid having a halogen anion.

Process of recovery of exhausted ionic liquids used in the extractive desulfurization of naphthas

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Mexico City, Mexico

Rafael Martínez Palou