IP Library Granted Patent US 12,377,405
Granted Patent B2
US 12,377,405 · App. 17/192,452 · Granted Aug 5, 2025

Synthesis of metal complexes and uses thereof

Inventor: Han Lee (Chicago, IL)
Assignee: Novomer, Inc.
B01J31/183B01J31/1815B01J31/2243C07D487/22C07F5/069B01J2231/321B01J2531/0205B01J2531/025B01J2531/0252B01J2531/31B01J2531/845
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Quick Facts
Patent No.
US 12,377,405
App. No.
17/192,452
Granted
Aug 5, 2025
Kind
B2
Abstract

The present disclosure provides novel methods of making aluminum complexes with utility for promoting epoxide carbonylation reactions. Methods include reacting neutral metal carbonyl compounds with alkylaluminum complexes, such as the alkylaluminum complexes represented by Formula I, where Q is a nitrogen atom and the four Q groups are part of a single porphyrin ligand and R q is selected from optionally substituted C 1-12 aliphatic and optionally substituted aryl:

Claims (33)

1. A method for preparing an aluminum-based carbonylation catalyst and a ketone, comprising contacting a compound of formula I with a neutral metal carbonyl compound to produce the aluminum-based carbonylation catalyst and the ketone, wherein:

the compound of formula I is

the neutral metal carbonyl compound is dicobalt octacarbonyl, tetracobalt dodecacarbonyl, or a mixture thereof,

the aluminum-based carbonylation catalyst is

[Co(CO) 4 ] − ; and

the ketone is

wherein:

Q is a nitrogen atom and the four Q groups are part of a single porphyrin ligand; and

R q is an optionally substituted C 1-12 aliphatic group.

2. The method of claim 1 , wherein the moiety

is:

wherein:

R d is independently at each occurrence hydrogen, halogen, —OR 4 , —NR y 2 , —SR, —CN, —NO 2 , —SO 2 R y , —SOR y , —SO 2 NR y 2 ; —CNO, —NRSO 2 R y , —NCO, —N 3 , —SiR 3 ; or an optionally substituted group selected from the group consisting of C 1-20 aliphatic; C 1-20 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 6- to 10-membered aryl; 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur; and 4- to 7-membered heterocyclic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur, where two or more R d groups may be taken together to form one or more optionally substituted rings,

each R y is independently hydrogen, or an optionally substituted group selected the group consisting of: carbamoyl, arylalkyl; 6- to 10-membered aryl; C 1-12 aliphatic; C 1-12 heteroaliphatic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 4- to 7-membered heterocyclic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; an oxygen protecting group; and a nitrogen protecting group; where two R y on the same nitrogen atom may be taken with the nitrogen atom to form an optionally substituted 4- to 7-membered heterocyclic ring having 0-2 additional heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur,

R 4 is a hydroxyl protecting group or R y , and

R is independently at each occurrence optionally substituted C 1-12 aliphatic or optionally substituted aryl.

3. The method of claim 1 , wherein the moiety

is:

4. The method of claim 1 , wherein the moiety

is:

wherein:

R d is independently at each occurrence hydrogen, halogen, —OR 4 , —NR y 2 , —SR, —CN, —NO 2 , —SO 2 R y , —SOR y , —SO 2 NR y 2 ; —CNO, —NRSO 2 R y , —NCO, —N 3 , —SiR 3 ; or an optionally substituted group selected from the group consisting of C 1-20 aliphatic; C 1-20 heteroaliphatic having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 6- to 10-membered aryl; 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur; and 4- to 7-membered heterocyclic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur, where two or more R d groups may be taken together to form one or more optionally substituted rings,

each R y is independently hydrogen, or an optionally substituted group selected the group consisting of: carbamoyl, arylalkyl; 6- to 10-membered aryl; C 1-12 aliphatic; C 1-12 heteroaliphatic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 5- to 10-membered heteroaryl having 1-4 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; 4- to 7-membered heterocyclic having 1-2 heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur; an oxygen protecting group; and a nitrogen protecting group; where two R y on the same nitrogen atom may be taken with the nitrogen atom to form an optionally substituted 4- to 7-membered heterocyclic ring having 0-2 additional heteroatoms independently selected from the group consisting of nitrogen, oxygen, and sulfur,

R 4 is a hydroxyl protecting group or R y , and

R is independently at each occurrence optionally substituted C 1-12 aliphatic or optionally substituted aryl.

5. The method of claim 1 , wherein the moiety

is

6. The method of claim 1 , wherein the moiety

is:

7. The method of claim 1 , wherein the carbonylation catalyst is produced in a composition having a halide or alkali metal salt content in an amount less than about 200 ppm.

8. The method of claim 1 , wherein R q is selected from the group consisting of methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, and octyl.

9. The method of claim 1 , wherein R q is ethyl.

10. The method of claim 1 , wherein the compound of formula I is:

Assignments (4)
CHANGE OF NAME Recorded Mar 24, 2026
From: NMER WINDDOWN, INC.
To: NOVOMER LLC
Reel/Frame 075187/0876 →
RELEASE OF SECURITY INTEREST Recorded Aug 5, 2022
From: TRUIST BANK
To: NOVOMER, INC.
Reel/Frame 061088/0116 →
SECURITY INTEREST Recorded Feb 1, 2022
From: NOVOMER, INC.
To: TRUIST BANK
Reel/Frame 058922/0803 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2021
From: LEE, HAN
To: NOVOMER, INC.
Reel/Frame 055498/0826 →
Continuity (4)
Division 16054904 · Aug 3, 2018
Continuation 15329027
Provisional Application 62028993 · Jul 25, 2014
Related Publication 20210291153A1 · Sep 23, 2021
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