[2,5]-DIBENZO-21-CROWN-7

Base Information

• Chemical Name: [2,5]-DIBENZO-21-CROWN-7
• CAS No.: 14098-41-0
• Molecular Formula: C₂₂H₂₈O₇
• Molecular Weight: 404.46
• Hs Code.: 29329990
• Mol file: 14098-41-0.mol

Synonyms:Dibenzo-21-crown-7

Chemical Property of [2,5]-DIBENZO-21-CROWN-7

Chemical Property:

• Vapor Pressure: 1.58E-11mmHg at 25°C
• Melting Point: 103-107 °C(lit.)
• Refractive Index: 1.6380 (estimate)
• Boiling Point: 548.6°Cat760mmHg
• Flash Point: 221.6°C
• PSA: 64.61000
• Density: 1.094g/cm³
• LogP: 2.96540
• Solubility.: almost transparency in hot Toluene

Purity/Quality:

98% ^*data from raw suppliers

Dibenzo-21-crown 7-Ether ^*data from reagent suppliers

Safty Information:

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 37/39-26

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

Technology Process of [2,5]-DIBENZO-21-CROWN-7

There total 8 articles about [2,5]-DIBENZO-21-CROWN-7 which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 78.0%

bis(2-hydroxyphenoxyethyl)ether (23116-94-1) + triethyleneglycol dimesylate (80322-82-3) → dibenzo-21-crown-7 (14098-41-0)

Guidance literature:

bis(2-hydroxyphenoxyethyl)ether; With caesium carbonate; In acetonitrile; for 3h; Reflux; Inert atmosphere;

triethyleneglycol dimesylate; In acetonitrile; Inert atmosphere; Reflux;

DOI:10.3998/ark.5550190.0011.718

Reference yield: 75.0%

diethylene glycol dimesylate (34604-52-9) + 1,8-bis(2-hydroxyphenoxy)-3,6-dioxaoctane (68822-97-9) → dibenzo-21-crown-7 (14098-41-0)

Guidance literature:

1,8-bis(2-hydroxyphenoxy)-3,6-dioxaoctane; With caesium carbonate; In acetonitrile; for 3h; Reflux; Inert atmosphere;

diethylene glycol dimesylate; In acetonitrile; Inert atmosphere; Reflux;

DOI:10.3998/ark.5550190.0011.718

Reference yield: 54.0%

bis(2-hydroxyphenoxyethyl)ether (23116-94-1) + 1,2-bis(2-chloroethoxy)ethane (112-26-5,27252-69-3) → dibenzo-21-crown-7 (14098-41-0)

Guidance literature:

With diacetoxydibenzo-18-crown-6; In acetonitrile; at 85 ℃; for 36h;

DOI:10.5012/jkcs.2014.58.2.193

upstream raw materials:

1,8-bis(2-hydroxyphenoxy)-3,6-dioxaoctane

diethylene glycol ditosylate

bis(2-hydroxyphenoxyethyl)ether

1,2-bis(2-chloroethoxy)ethane

Downstream raw materials:

dicyclohexano-21-crown-7

Refernces

• 1、 Hanes, Robert E.,Lee, Jong Chan,Ivy, Sheryl N.,Palka, Anna,Bartsch, Richard A.. "Preparation of benzo- and polybenzocrown ethers by macrocyclization reactions". . p. 238 - 248. Retrieved 2012/11/07.
• 2、 Colquhoun, Howard M.,Goodings, Eric P.,Maud, John M.,Stoddart, J. Fraser,Wolstenholme, John B.,Williams, David J.. "The Complexation of the Diquat Dication by Dibenzo-3n-crown-n Ethers". . p. 607 - 624. Retrieved 2007/10/02.