204578-86-9

Basic information

• Product Name: ((1E,5E)-hexa-1,5-diene-1,3,4,6-tetrayl)tetrabenzene
• Synonyms: ((1E,5E)-hexa-1,5-diene-1,3,4,6-tetrayl)tetrabenzene
• CAS NO: 204578-86-9
• Molecular Weight: 386.536
• Mol File: 204578-86-9.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: ((1E,5E)-hexa-1,5-diene-1,3,4,6-tetrayl)tetrabenzene(CAS DataBase Reference)
• NIST Chemistry Reference: ((1E,5E)-hexa-1,5-diene-1,3,4,6-tetrayl)tetrabenzene(204578-86-9)
• EPA Substance Registry System: ((1E,5E)-hexa-1,5-diene-1,3,4,6-tetrayl)tetrabenzene(204578-86-9)

Safety Data

• Hazardous Substances Data: 204578-86-9(Hazardous Substances Data)

Upstream product

• 73930-97-9 3-acetoxy-1,3-diphenylpropene 
• 62668-02-4 (E)-1,3-diphenyl-2-propen-1-ol 
• 4663-33-6 1,3-diphenyl-3-hydroxypropene 
• 94-41-7 benzalacetophenone 
• 100-52-7 benzaldehyde 
• 98-86-2 acetophenone 
• 258881-78-6 (E)-N,N-diethyl-1,3-diphenylprop-2-en-1-amine 
• 87751-69-7 rac-(E)-1,3-diphenyl-3-acetoxy-prop-1-ene 

Relevant articles and documents

Enantioselective Reductive Homocoupling of Allylic Acetates Enabled by Dual Photoredox/Palladium Catalysis: Access to C2-Symmetrical 1,5-Dienes

Transition-metal-catalyzed reductive coupling reactions have emerged as powerful protocols to construct C-C bonds. However, the development of enantioselective C(sp3)-C(sp3) reductive coupling remains challenging. Herein, we report a highly regio-, diastereo-, and enantioselective reductive homocoupling of allylic acetates through cooperative palladium and photoredox catalysis using diisopropylethylamine or Hantzsch ester as a homogeneous organic reductant. This straightforward protocol enables the stereoselective construction of C(sp3)-C(sp3) bonds under mild reaction conditions. A series of C2-symmetrical chiral 1,5-dienes were easily prepared with excellent enantioselectivities (up to >99% ee), diastereoselectivities (up to >95:5 dr), and regioselectivities (up to >95:5 rr). The resultant chiral 1,5-dienes can be directly used as chiral ligands in asymmetric synthesis, and they can be also transformed into other valuable chiral ligands.

Palladium-iminophosphine-catalyzed homocoupling of alkynylstannanes and other organostannanes using allyl acetate or air as an oxidant

A palladium-iminophosphine complex was found to catalyze the homocoupling reaction of alkynylstannanes using allyl acetate as an oxidant, whereas aryl- and alkenylstannanes were oxidatively homocoupled with air.

PALLADIUM-CATALYZED COUPLING OF ALLYLIC ACETATES WITH ZINC

Allylic acetates were coupled with zinc dust in the presence of a catalytic amount of to give the corresponding 1,5-dienes under mild conditions in high yields.Significant cosolvent effects were found with methanol or 1,2-ethanediol in tetrahydrofuran.