441799-30-0

Basic information

• Product Name: 4,4'-(2,2'-oxybis(ethane-2,1-diyl)bis(oxy))bis(methylene)bis(bromobenzene)
• Synonyms: 4,4'-(2,2'-oxybis(ethane-2,1-diyl)bis(oxy))bis(methylene)bis(bromobenzene)
• CAS NO: 441799-30-0
• Molecular Weight: 444.163
• Mol File: 441799-30-0.mol

Chemical Properties

• CAS DataBase Reference: 4,4'-(2,2'-oxybis(ethane-2,1-diyl)bis(oxy))bis(methylene)bis(bromobenzene)(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-(2,2'-oxybis(ethane-2,1-diyl)bis(oxy))bis(methylene)bis(bromobenzene)(441799-30-0)
• EPA Substance Registry System: 4,4'-(2,2'-oxybis(ethane-2,1-diyl)bis(oxy))bis(methylene)bis(bromobenzene)(441799-30-0)

Safety Data

• Hazardous Substances Data: 441799-30-0(Hazardous Substances Data)

Upstream product

• 589-15-1 1-bromomethyl-4-bromobenzene 
• 111-46-6 diethylene glycol 

Downstream Products

• 441799-32-2 1-(4-{2-[2-(4-propynoyl-benzyloxy)-ethoxy]-ethoxymethyl}-phenyl)-propynone 
• 441799-31-1 C₂₀H₂₂O₅ 

Relevant articles and documents

An enaminone-directed benzannulation/macrocyclization approach to cyclophane ring systems

A straightforward and modular preparative approach to 1,3,5-triaroylbenzene-based functionalized cyclophane ring systems has been developed. The key cyclophane-forming macrocyclization reaction was accomplished during the course of a regioselective cross-benzannulation between bis(aryl ethynyl) ketone and enaminone reactants. Macrocyclic products with ring sizes ranging from 18-to 22-membered were successfully constructed. The composition of the tether connecting the two aryl ethynyl ketone fragments can be easily varied; consequently, this method is suitable for construction of a diverse range of structurally distinct cyclophane products. To illustrate this feature, cyclophanes possessing xylyl, alkyl, di(ethylene triamine), and di(ethylene oxy) bridging units were synthesized in isolated yields of 11-46%. Three new cyclophanes (calixarene-like macrocyles 8 and 9, as well as crownophane 18) were structurally characterized by X-ray diffractometry.

Recyclable, Strong, and Highly Malleable Thermosets Based on Boroxine Networks

Traditional thermoset materials have favorable material properties but are unable to reprocess and are difficult to recycle. Small molecule boroxines have been shown to undergo a reversible exchange reaction. Herein we employ boroxine as dynamic cross-lin

Malleable and Self-Healing Covalent Polymer Networks through Tunable Dynamic Boronic Ester Bonds

Despite numerous strategies involving dynamic covalent bond exchange for dynamic and self-healing materials, it remains a challenge to be able to tune the malleability and self-healing properties of bulk materials through simple small molecule perturbations. Here we describe the use of tunable rates of boronic ester transesterification to tune the malleability and self-healing efficiencies of bulk materials. Specifically, we used two telechelic diboronic ester small molecules with variable transesterification kinetics to dynamically cross-link 1,2-diol-containing polymer backbones. The sample cross-linked with fast-exchanging diboronic ester showed enhanced malleability and accelerated healing compared to the slow-exchanging variant under the same conditions. Our report demonstrates the possibility of transferring small molecule kinetics to dynamic properties of bulk solid material and may serve as a guide for the rational design of tunable dynamic materials.