130855-44-6

Basic information

• Product Name: (1R,4S,4aS,5S,8R,8aR,9aR,10aS)-1,4,4a,5,8,8a,9a,10a-Octahydro-1,4;5,8-dimethano-anthraquinone
• Synonyms: (1R,4S,4aS,5S,8R,8aR,9aR,10aS)-1,4,4a,5,8,8a,9a,10a-Octahydro-1,4;5,8-dimethano-anthraquinone
• CAS NO: 130855-44-6
• Molecular Weight: 240.302
• Mol File: 130855-44-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: (1R,4S,4aS,5S,8R,8aR,9aR,10aS)-1,4,4a,5,8,8a,9a,10a-Octahydro-1,4;5,8-dimethano-anthraquinone(CAS DataBase Reference)
• NIST Chemistry Reference: (1R,4S,4aS,5S,8R,8aR,9aR,10aS)-1,4,4a,5,8,8a,9a,10a-Octahydro-1,4;5,8-dimethano-anthraquinone(130855-44-6)
• EPA Substance Registry System: (1R,4S,4aS,5S,8R,8aR,9aR,10aS)-1,4,4a,5,8,8a,9a,10a-Octahydro-1,4;5,8-dimethano-anthraquinone(130855-44-6)

Safety Data

• Hazardous Substances Data: 130855-44-6(Hazardous Substances Data)

Upstream product

• 78548-82-0 1α,4α,4aβ,10aα,5β,8β,8aα,9aβ-octahydro-1,4:5,8-dimethanoanthracene-9,10-dione 
• 5439-22-5 ane-cis-1.4;5.8-dimethylen-1.4.5.8.11.12.13.14-octahydro-anthraquinone 
• 542-92-7 cyclopenta-1,3-diene 
• 106-51-4 p-benzoquinone 

Downstream Products

• 5439-22-5 ane-trans-1.4;5.8-dimethylen-1.4.5.8.11.12.13.14-octahydro-anthraquinone 
• 542-92-7 cyclopenta-1,3-diene 
• 106-51-4 p-benzoquinone 
• 2065-48-7 exo-cis-anti-cis-exo-1,2,3,4,4a,5,6,7,8,8a,9a,10a-Dodecahydro-1,4:5,8-dimethanoanthracene-9,10-dione 

Relevant articles and documents

The 1:1 and 2:1 adducts of cyclopentadiene with p-benzoquinone

The exo-cis isomer (8) of the well-known endo-cis 1:1 adduct (4) of cyclopentadiene and p-benzoquinone has been obtained by heating the endo-cis-anti-cis-endo 2:1 adduct (13) with p-benzoquinone and also by haeting 4 alone.The exo-cis isomer of the 1:1 adduct (11) of cyclopentadiene and p-toluquinone has also been obtained for the first time.Heating of the 2:1 adduct 13 gives a mixture containing the endo-anti-exo isomer 15, the exo-anti-exo isomer 16, and 13.The structures of these two new isomers are assigned on the basis of (i) spectroscopic comparison with 13 and the known endo-syn-endo and endo-syn-exo isomers, 12 and 14; (ii) spectroscopic comparison of the corresponding tetrahydro compounds; and (iii) the conversion of tetrahydro 15 by oxidation and acetylation to the syn-hydroquinone diacetate 28, which is stereoisomeric with the anti-hydroquinone diacetate 25, prepared by similar treatment of tetrahydro 13,14, and 16.It is proposed that interconversion of the 1:1 adducts occurs via dissociation-recombination, interconversion of the tetrahydro 2:1 adducts occurs via enolization, while interconversion of the 2:1 adducts themselves can occur by both routes.