64330-66-1

Basic information

• Product Name: 3,5-Octadiene-2,7-dione, (E,E)-
• CAS NO: 64330-66-1
• Molecular Formula: C8H10O2
• Molecular Weight: 138.166
• Mol File: 64330-66-1.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 3,5-Octadiene-2,7-dione, (E,E)-(CAS DataBase Reference)
• NIST Chemistry Reference: 3,5-Octadiene-2,7-dione, (E,E)-(64330-66-1)
• EPA Substance Registry System: 3,5-Octadiene-2,7-dione, (E,E)-(64330-66-1)

Safety Data

• Hazardous Substances Data: 64330-66-1(Hazardous Substances Data)

Upstream product

• 14400-73-8 octa-3,5-diyne-2,7-diol 
• 2130-24-7 4,5-diethoxy-octa-1,7-diyne 
• 506-82-1 dimethylcadmium 
• 78-94-4 methyl vinyl ketone 
• 4301-16-0 meso/d,l-3,4-dimethyl-1,5-hexadiyne-3,4-diol 
• 99799-02-7 optically inactive octa-3t,5t-diene-2,7-diol 
• 534-22-5 2-methylfuran 
• 2684-62-0 diazoacetone 
• 2130-25-8 4,5-diethoxy-octane-2,7-dione 

Relevant articles and documents

Convenient synthesis of 2,5-disubstituted thiophene from 1,6-dioxo-2,4- diene

Reaction of 1,6-dioxo-2,4-diene with P2S5 and Lawesson's reagent affords the 2,5-disubstituted thiophene. This reaction can take place regioselectively in the presence of BF3-etherate catalysis, useful for the synthesis of

N-vinylpyridinium and -ammonium tetrafluoroborate salts: New electrophilic coupling partners for Pd(0)-catalyzed suzuki cross-coupling reactions

N-Vinylpyridinium and -trialkylammonium tetrafluoroborate salts represent a new class of electrophilic coupling partner for Pd(0)-catalyzed Suzuki cross-coupling reactions and give very good to excellent yields of products with a wide range of boronic acids. The salts are easily prepared from activated acetylenes and pyridinium or trialkylammonium tetrafluoroborates to form crystalline, air-stable, and nonhygroscopic crystals.

Thermal Rearrangements, XXII. The Propargyl-Cope Rearrangement of meso- and d,l-3,4-Dimethyl-1,5-hexadiyne-3,4-diol

The thermal behavior of meso- and d,l-3,4-dimethyl-1,5-hexadiyne-3,4-diol (meso- and d,l-4) has been studied at 400 deg C in the gas phase.In a tandem reaction the diols isomerize via the bisallenes 5 first to cis- and trans-3,4-diacetylcyclobutene (cis- and trans-8) which have been detected as intermediates by 13C-NMR spectroscopy as well as catalytic hydrogenation to 1,2-diacetylcyclobutane (9).Subsequently, 8 stabilizes itself by ring opening to (E,Z)- and (E,E)-3,5-octadien-2,7-dione .As a side reaction retro-ene cleavage of 4 to 2-butynone (10) and methyl vinyl ketone (12) is observed.By pyrolysis of the pure diastereomers 4 it is shown that the retro-ene process is more pronounced in the d,l than in the meso series. - Key Words: Rearrangements, thermal / Propargyl-Cope reaction / 1,5-Hexadiyne-3,4-diol / Cyclobutene, 3,4-diacetyl- / Fragmentations, retro-ene / Tandem reactions