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The Synthesis of 4b, 5, 12, 12a‐Tetrahydro‐5, 12‐ethano‐13 H ‐indeno[2,3‐ b ]anthracenes, 4b, 5, 10, 10a ‐ tetrahydro‐5,10‐ethano‐11 H ‐indeno[2,3‐ b ]naphtalenes and 1,2,3,4,4a, 9a‐Hexahydro‐1,4‐( peri ‐naphthaleno)‐fluorenes
Author(s) -
Amrein Walter,
Schaffner Kurt
Publication year - 1975
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19750580208
Subject(s) - chemistry , naphthalene , anthracene , stereochemistry , ketone , organic chemistry
The synthesis of endo ‐ and exo ‐13‐oxo‐4b, 5, 12, 12a‐tetrahydro‐5, 12‐ethanoindeno[2,3‐ b ]anthracene ( 23 ; Schemes 1 and 2 ), exo ‐ and endo ‐11‐oxo‐4b, 5, 10, 10a‐tetrahydro‐5, 10‐ethano‐indeno[2,3‐ b ]naphthalene ( 31 ; Scheme 3 ), 1,2,3,4,4a,9a‐hexahydro−1,4‐( peri ‐naphthaleno)‐fluoren‐9‐one ( 36 ; Scheme 4 ), and the corresponding hydrocarbons of the stereoisomeric ketone pairs 23 and 36 , is described.