# US 2014/0155634 A1 · Epoxidation catalysts

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- Number: US 2014/0155634 A1
- Document ID: US20140155634A1
- Status: Published application
- Kind: A1
- Application number: 14/174,301
- Filed: 2014-02-06
- Published: 2014-06-05
- Earliest claimed: 2010-03-01
- Assignees: Massachusetts Institute of Technology
- Applicants: Massachusetts Institute of Technology
- Inventors: Timothy F. Jamison; Yutaka Ikeuchi
- Web page: https://patentgrep.com/patent/US20140155634A1

## CPC

- C07F 7/1804: {Compounds having Si-O-C linkages (Si-O-acyl linkages C07F7/1896)}
- C07D 317/20: Free hydroxyl or mercaptan
- C07D 317/26: Radicals substituted by doubly bound oxygen or sulfur atoms or by two such atoms singly bound to the same carbon atom
- C07D 493/20: Spiro-condensed systems
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)

## Abstract

The present invention generally relates to methods for the synthesis of catalysts, including epoxidation catalysts, and related compounds and catalyst compositions. Embodiments described herein may provide efficient processes for providing catalysts (e.g., epoxidation catalysts) in large quantities and using simplified methods.

## Claims

### Claim at position 1

1-25. (canceled)

### Claim 26

A composition, comprising:
a compound having a structure as in Formula (I):
wherein:
R1 and R2 can be the same or different and each can be hydrogen, alkyl, or aryl, provided that when one of R1 and R2 is hydrogen, the other is alkyl or aryl;
R3 is a protecting group;
R4 is a protecting group that can be removed in the presence of an acid; and
R5, R6, R7, and R8 can be the same or different and each can be hydrogen, alkyl, or aryl,
wherein the protecting group is trimethylsilyl (TMS), tert-butyldiphenylsilyl (TBDPS), tert-butyldimethylsilyl (TBDMS) triisopropylsilyl (TIPS), [2-(trimethylsilyl)ethoxy]methyl (SEM), trimethylsilyl triflate, triethylsilyl triflate, or tri-t-butylsilyl triflate.

### Claim 27 (depends on 26)

A composition as in claim 26, wherein the compound has the following structure,

### Claim at position 4

28-30. (canceled)

### Claim 31

A composition, comprising:
a compound having a structure as in Formula (II):
wherein:
R1 and R2 can be the same or different and each can be hydrogen, alkyl, or aryl, provided that when one of R1 and R2 is hydrogen, the other is alkyl or aryl; and
R5, R6, R7, and R8 can be the same or different and each can be hydrogen, alkyl, or aryl.

### Claim 32 (depends on 31)

A composition as in claim 31, wherein the compound has the following structure,