Synthesis of 2(5H)-furanones via oxidative ring expansion of 4-hydroxy-2-cyclobutenones
A new method to reduce cyclobutenediones towards 4-hydroxy-2-cyclobutenones was established. The latter compounds gave rise to new 5-halo-2(5H)-furanones by reaction with halogenating agents via a cationic ring-opening-ring-closure mechanism.
Verniest, Guido,De Kimpe, Norbert
p. 947 - 950
(2007/10/03)
Synthesis of (E)- and (Z)-Pulvinones
Two new routes to pulvinones have been developed, one of which involves a novel Wittig reaction.For the first time, members of the E-series, including the parent (E)-pulvinone, are reported and the structural elucidation of the geometric isomers is descri
Campbell, Alexander C.,Maidment, Maurice S.,Pick, John H.,Stevenson, Donald F. M.
p. 1567 - 1576
(2007/10/02)
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