The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2020
Filed:
Jul. 11, 2019
Uchicago Argonne, Llc, Chicago, IL (US);
Trevor L. Dzwiniel, Carol Stream, IL (US);
Krzysztof Pupek, Plainfield, IL (US);
UCHICAGO ARGONNE, LLC, Chicago, IL (US);
Abstract
Carbonate esters of Formula (I): (R)(R)(R)Si—R—O—C(═O)—O—R—Si(R)(R)(R) are prepared by reaction of a silyl-substituted alcohol of Formula (II): (R)(R)(R)Si—R—OH with an activated carbonyl compound of Formula (III): C(═O)Zin the presence of a catalyst (e.g., an bicyclic amidine, a bicyclic guanidine, or a phosphazene) in an aprotic solvent. In Formulas (I) and (II) each of Rand Rindependently is alkyl; Ris alkyl or —X—Si(R)(R)(R); Xis O or alkylene; Ris alkylene; and each R, R, and Rindependently is alkyl. In Formula (III), Z is 1-N-imidazolyl or 1-N-succinimidyl. In some embodiments, the catalyst used in the methods described herein comprises at least one base selected from the group consisting of a bicyclic amidine and a bicyclic guanidine. The reaction proceeds readily under both bulk and continuous flow reactor conditions.