Electrostatically Enhanced Phosphoric Acids and Their Applications in Brønsted Acid Catalysis
type: CreativeWork
description: Different types of Brønsted acid catalysts are commonly used in a wide variety of organic transformations and are of continuing interest because there is a general need to carry out reactions in a faster and higher yielding manner with greater selectivities. Phosphoric acid derivatives, with their fairly strong acidity and structural flexibility that enables them to be incorporated into rigid organic frameworks, are one of the most efficient and versatile classes of Brønsted acids. Herein, a novel type of electrostatically enhanced phosphoric acids that contain positively charged ion centers are synthesized and studied. The activities of achiral phosphoric acids with alkylated pyridinium ion moieties were examined in a variety of organic transformations. In addition, the activities and enantioselectivities of a series of chiral phosphonium ion tagged phosphoric acids were also evaluated in several different organic reactions. The study of electrostatically enhanced phosphoric acids was found to provide promising avenues for developing novel Brønsted acid catalysts.
abstract: Different types of Brønsted acid catalysts are commonly used in a wide variety of organic transformations and are of continuing interest because there is a general need to carry out reactions in a faster and higher yielding manner with greater selectivities. Phosphoric acid derivatives, with their fairly strong acidity and structural flexibility that enables them to be incorporated into rigid organic frameworks, are one of the most efficient and versatile classes of Brønsted acids. Herein, a novel type of electrostatically enhanced phosphoric acids that contain positively charged ion centers are synthesized and studied. The activities of achiral phosphoric acids with alkylated pyridinium ion moieties were examined in a variety of organic transformations. In addition, the activities and enantioselectivities of a series of chiral phosphonium ion tagged phosphoric acids were also evaluated in several different organic reactions. The study of electrostatically enhanced phosphoric acids was found to provide promising avenues for developing novel Brønsted acid catalysts.
author: Ma, Jie
language: en
keywords: Brønsted acid catalysis, catalyst, phosphoric acid
date published: 2018-06
date modified: 2026-07-24T05:19:52Z
provider: University of Minnesota
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Minnesota

PropertyValue
property ID: Handle
value: http://hdl.handle.net/11299/200303