The preparation of substituted 3,4-dihydro-1(2H)-naphthalenones from benzocyclobutenones via sequential thermal electrocyclic reactions
1-Alkenylbenzocyclobutenols, prepared from benzocyclobutenones via the addition of alkenyl Grignard reagents or the addition of alkynyllithium reagents followed by (E)-selective reduction, undergo successive thermal 4π and 6π electrocyclisations to give substituted 3,4-dihydro-1(2H)-naphthalenones. An analogous sequence gave 3,4-dihydro-1(2H)-anthracenone from naphtho[b]cyclobuten-1(2H)-one.
Hickman, Derek N.,Hodgetts, Kevin J.,Mackman, Peter S.,Wallace, Timothy W.,Wardleworth, J. Michael
p. 2235 - 2260
(2007/10/03)
The preparation of α-tetralones from benzocyclobutenones via sequential thermal electrocyclic reactions
1-Alkenylbenzocyclobuten-1-ols, prepared from benzocyclobutenones via the addition of alkenylmagnesium bromides, or the addition of alkynyllithium reagents followed by (E)-selective reduction of the triple bond, undergo successive thermal 4π and 6π electrocyclic reactions leading to substituted 3,4-dihydro-1(2H)-naphthalenones.
Hickman, Derek N.,Wallace, Timothy W.,Wardleworth, J. Michael
p. 819 - 822
(2007/10/02)
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