Related Experiment Video
Updated: Aug 11, 2025

Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
Tris(4-azidophenyl)methanol - a novel and multifunctional thiol protecting group
Xujun Qiu1, Julian Brückel1, Christoph Zippel1
1Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany braese@kit.edu (+49)-721-6084-2903.
A new aryl azide, tris(4-azidophenyl)methanol, serves as a thiol protecting group in peptoid synthesis. It can be removed using Staudinger reduction and modified for materials chemistry via cycloaddition reactions.
Area of Science:
- Organic Chemistry
- Polymer Chemistry
- Materials Science
Background:
- Aryl azides are versatile chemical intermediates.
- Developing new protecting groups is crucial for efficient synthesis.
- Functional materials require adaptable building blocks.
Purpose of the Study:
- To report a novel, multifunctional aryl azide: tris(4-azidophenyl)methanol.
- To demonstrate its utility as a thiol protecting group in peptoid synthesis.
- To explore its potential in materials chemistry through further functionalization.
Main Methods:
- Synthesis of tris(4-azidophenyl)methanol.
- Application as a thiol protecting group in peptoid synthesis.
- Cleavage of the protecting group via Staudinger reduction.
- Functionalization using copper-catalyzed cycloaddition reactions.
Main Results:
- Tris(4-azidophenyl)methanol was successfully synthesized.
- The aryl azide effectively protected thiols during peptoid synthesis.
- The protecting group was efficiently removed under mild Staudinger reduction conditions.
- The aryl azide underwent successful functionalization via copper-catalyzed cycloaddition.
Conclusions:
- Tris(4-azidophenyl)methanol is a valuable and versatile aryl azide.
- Its application as a thiol protecting group offers mild deprotection conditions.
- The compound provides a platform for creating novel materials through accessible functionalization routes.
Related Concept Videos
Acetals and Thioacetals as Protecting Groups for Aldehydes and Ketones
In the presence of multiple functional groups, when selective reduction of one group over the other is desired, groups like aldehydes and ketones that form acetals...
Protection of Alcohols
Protection
It defines a protecting group as the masking agent to make the more reactive species inert to a given set of conditions. This concept is depicted via the illustration of liquid flow through different outlets in an assembly of pipes. The analogy helps to understand the role...
Protecting Groups for Aldehydes and Ketones: Introduction
Preparation and Reactions of Thiols
Preparation and Reactions of Sulfides
Structure and Nomenclature of Thiols and Sulfides

