heptahelicene

Base Information

• Chemical Name: heptahelicene
• CAS No.: 59177-52-5
• Molecular Formula: C₃₀H₁₈
• Molecular Weight: 378.473
• Mol file: 59177-52-5.mol

Synonyms:

Chemical Property of heptahelicene

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of heptahelicene

There total 26 articles about heptahelicene 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: 90.0%

3,6-distyrylphenanthrene (694502-83-5) → heptahelicene (59177-52-5,20508-10-5,16914-68-4,40122-35-8)

Guidance literature:

With iodine; methyloxirane; In toluene; UV-irradiation;

DOI:10.1002/ejoc.200300470

Reference yield: 81.0%

3,3'-divinyl-4,4'-biphenanthryl → heptahelicene (59177-52-5,20508-10-5,16914-68-4,40122-35-8)

Guidance literature:

Grubbs catalyst first generation; In dichloromethane; at 100 ℃; for 1h; microwave irradiation;

DOI:10.1002/anie.200504150

Reference yield: 75.0%

3,3'-bis-bromomethyl-[4,4']biphenanthrenyl (221683-80-3) → heptahelicene (59177-52-5,20508-10-5,16914-68-4,40122-35-8)

Guidance literature:

With lithium hexamethyldisilazane; In tetrahydrofuran; N,N,N,N,N,N-hexamethylphosphoric triamide; at 0 ℃; for 0.166667h;

DOI:10.1016/S0040-4039(98)02670-7

upstream raw materials:

1,2-Di-(3-phenanthryl)ethylen, cis

1,2-di(3-phenanthryl)ethylene

9-Bromo<7>helicene

distyryl-3,6-phenanthrene

Downstream raw materials:

<7>-helicene

heptahelicene

Refernces

• 1、 Weber,Clennan. "Origin of the Preferential Formation of Helicenes in Mallory Photocyclizations. Temperature as a Tool to Influence Reaction Regiochemistry". . p. 817 - 830. Retrieved 2019/01/14.
• 2、 Talele, Harish R.,Chaudhary, Anju R.,Patel, Parthiv R.,Bedekar, Ashutosh V.. "Expeditious synthesis of helicenes using an improved protocol of photocyclodehydrogenation of stilbenes". experimental part. p. 15 - 37. Retrieved 2011/06/19.