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Facial selectivity in the 4 + 2 reactions of a diene derived from carvone
(Royal Society of Chemistry, 2006)
The facial selectivities of cyclohexadienes bearing isopropenyl and isopropyl groups as
plane-nonsymmetric substituents were assessed in 4 + 2 reactions with N-phenylmaleimide,
tetracyanoethylene and 4-phenyl-1,2,4- ...
cis-3,5-Cyclohexadiene-1,2-diol derivatives: facial selectivity in their Diels-Alder reactions with ethylenic, acetylenic and azo dienophiles
(2006)
The Diels - Alder reactions of maleimide with the acetonide derivative (6a) of
cis-3,5-cyclohexadiene-1,2-diol (1a) in various solvents showed facial selectivities ranging from 1
: 1 to 1 : 9. The same derivative 6a reacted ...
Synthetic studies toward the kempane diterpenes. Construction of a key tricyclic intermediate
(2005)
A synthetic sequence is described for construction of the tricyclic portion (35) of kempane
diterpenes. The central stereochemistry was established by a Diels-Alder addition of
2,6-dimethyl-para-benzoquinone to a 5-membered, ...