136339-03-2

Basic information

• Product Name: 3,4-dimethylbicyclo<4.3.0>nona-3,8-dien-7-one
• Synonyms: 3,4-dimethylbicyclo<4.3.0>nona-3,8-dien-7-one
• CAS NO: 136339-03-2
• Molecular Weight: 162.232
• Mol File: 136339-03-2.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3,4-dimethylbicyclo<4.3.0>nona-3,8-dien-7-one(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-dimethylbicyclo<4.3.0>nona-3,8-dien-7-one(136339-03-2)
• EPA Substance Registry System: 3,4-dimethylbicyclo<4.3.0>nona-3,8-dien-7-one(136339-03-2)

Safety Data

• Hazardous Substances Data: 136339-03-2(Hazardous Substances Data)

Upstream product

• 59995-48-1 (R)-4-acetoxycyclopent-2-en-1-one 
• 513-81-5 2,3-dimethyl-buta-1,3-diene 

Relevant articles and documents

4-Hydroxycyclopent-2-en-1-one and derivatives as chiral synthetic equivalents of cyclopentadienone in asymmetric Diels-Alder reactions

Endo-tricyclodecadienone 8a and related annelated-cyclopentenones (8b, 20, 21a-c and 22) are synthesized in good chemical yield by a Diels-Alder reaction of 4-hydroxycyclo-pent-2-en-1-one 12a and derivatives 12b-h with an appropriate diene. These additions are considerably accelerated by Lewis catalysts, high pressure and by using water as solvent. Due to opposing steric and electronic effects the diastereofacial selectivity of the asymmetric cycloadditions is moderate. By carefully choosing the substrate and reaction conditions an acceptable π-facial selectivity can be achieved.