77884-47-0Relevant academic research and scientific papers
THE THERMAL REARRANGEMENT OF TETRA-ARYLATED DIHYDROSEMIBULLVALENE DERIVATIVES, AND (1)H/(13)C NMR-STRUCTURE CORRELATIONS
Greenfield, S.,Mackenzie, K.
, p. 2255 - 2258 (2007/10/02)
A systematic study of the thermal cyclisation of isomeric di-p-anisyl-diphenylcyclooctatriene derivatives, and of the facile isomerisation of the resulting dihydrosemibullvalenes, with 1H/13C nmr-structure correlations, supports earlier proposals for rearrangement mechanism.
PERICYCLIC TRANSFORMATIONS OF TETRACYCLO2,903,8>TRIDECA-4,6,11-TRIENES, AND FORMATION OF DIHYDROSEMIBULLVALENES BY THERMAL INTRAMOLECULAR?4a+?2a>CYCLOADDITION IN SUBSTITUTED CYCLOOCTATRIENES
Lay, W. P.,Mackenzie, K.,Miller, A. S.,Williams-Smith, D. L.
, p. 3021 - 3031 (2007/10/02)
Cyclopentadienones react with certain cyclobutene dienophiles to give the anticipated carbonyl bridge adducts; these, on relatively mild thermolysis, yield dihydrosemibullvalene derivatives by a novel sequence including cheletropic loss of carbon monoxide, electrocyclic ring opening of immediate substituted bicyclooctadienes, and intramolecular ?4a + ?2a>cycloaddition of the derived cyclooctatrienes.Other pericyclic reactions of compounds related to those of the title compounds are also discussed.
