Synthesis of lactam based ionic liquid

Patent metadata

Field	Value
Publication number	US-9738608-B2
Application number	US-201514954077-A
Country	US
Kind code	B2
Filing date	Nov 30, 2015
Priority date	May 6, 2014
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

Lactamium based ionic liquids are described. They comprise at least one of:
the reaction product of a lactam compound having a formula (IV)

wherein n is 1, 2 or 4 to 8,
and a Brøsted acid HX; or a Brøsted acid HX, where X is a halide, and a metal halide; where the reaction product is p-toluenesulfonate, halide, or the halometallate;
or
the reaction product of a lactam compound having a formula (V)

wherein the ring has at least C—C one double bond, and n is 1 to 8,
and a Brøsted acid HX; or a Brøsted acid HX, where X is a halide, and a metal halide;
or
the reaction product of a lactam compound having a formula (VI)

wherein n is 1 to 8, m is 1 to 8, and the rings can be saturated or unsaturated;
and a Brøsted acid HX; or a Brøsted acid HX, where X is a halide, and a metal halide.

First claim

What is claimed is:

1. A lactamium based ionic liquid selected from the group consisting of:
a reaction product of a lactam compound having formula

wherein n is 1,
and a Brønsted acid HX; or a Brønsted acid HX, where X is a halide, and a metal halide; where the reaction product is a halide, or a halometallate.

2. A method of making a lactamium based ionic liquid
comprising:
reacting a lactam compound having formula

wherein n is 1,
with a Brønsted acid HX; or a Brønsted acid HX, where X is a halide, and a metal halide; where the reaction product is a halide, or a halometallate.

3. The method of claim 2 wherein the lactam compound has the general formula (IV).

4. The method of claim 2 wherein the reaction takes place in a solvent.

5. The method of claim 4 wherein the solvent comprises water, toluene, dichloromethane, liquid carboxylic acids, alcohols, or combinations thereof.

6. The method of claim 2 wherein a ratio of the Brønsted acid HX to the lactam compound is about 1:1 to about 3:1.

7. A lactamium based ionic liquid, the ionic liquid having formula:

wherein n is 1, and X − is an anion group of a Brønsted acid HX or a halometallate, and wherein is X − is halide, or the halometallate.

Assignees

• Uop Llc

Inventors

• Broderick Erin M
• Bhattacharyya Alakananda
• Levy Alan B
• Tang Lihao

Classifications

• C07D223/10 Primary

  attached in position 2 · CPC title

• C07C309/73

  to carbon atoms of non-condensed six-membered aromatic rings · CPC title