144784-02-1

Basic information

• Product Name: (3aR,4S)-4-Phenyl-3,3a,4,5-tetrahydro-2H-6-oxa-cyclopenta[a]anthracen-11-one
• CAS NO: 144784-02-1
• Molecular Weight: 314.384
• Mol File: 144784-02-1.mol

Chemical Properties

• CAS DataBase Reference: (3aR,4S)-4-Phenyl-3,3a,4,5-tetrahydro-2H-6-oxa-cyclopenta[a]anthracen-11-one(CAS DataBase Reference)
• NIST Chemistry Reference: (3aR,4S)-4-Phenyl-3,3a,4,5-tetrahydro-2H-6-oxa-cyclopenta[a]anthracen-11-one(144784-02-1)
• EPA Substance Registry System: (3aR,4S)-4-Phenyl-3,3a,4,5-tetrahydro-2H-6-oxa-cyclopenta[a]anthracen-11-one(144784-02-1)

Safety Data

• Hazardous Substances Data: 144784-02-1(Hazardous Substances Data)

Upstream product

• 7148-07-4 1-pyrrolidinocyclopent-1-ene 
• 39103-38-3 (E)-2-styrylchromone 
• 126525-72-2 1-(2-hydroxyphenyl)-5-phenyl-4-pentene-1,3-dione 

Relevant articles and documents

A Novel Synthesis of Cyclopenta- and Cyclohexa-xanthones from the Reaction between Cycloalkyl Enamines and 2-Hydroxyphenylpentene-1,3-diones, and their Rearrangement to Cyclopenta- and Cyclohexa-xanthones

Treatment of (E)-5-substituted-1-(2-hydroxyphenyl)pent-4-ene-1,3-diones 1 with alicyclic ketone enamines 2 rapidly gives the cycloalkanoxanthones 3, but on longer treatment or on reaction of 3 with base, cycloalkanoxanthones are obtained; their structures, including stereochemistry, were determined from spectroscopic data and, in the case of 3aB, from X-ray diffraction analysis.

A New Xanthone Synthesis from the Diels-Alder Reaction between 2-Vinylchromen-4-ones and Cyclopentanone Enamine

The reaction between 2-vinylchromen-4-ones and 1-pyrrolidinylcyclopentene give substituted 2,3,3a,4-tetrahydrocyclopentaxanthen-11(5H)-ones; the stereochemistry of the product shows that the initial step in the reaction may be considered to be an exo-addition Diels-Alder with inverse electron demand.