The oxidative coupling of uracil derivatives t with olefins, such as methyl acrylate, acrylonitrile, methyl vinyl ketone, and styrene, using one equivalent of palladium acetate leads to the corresponding 5-(1-alkenyl)uracil derivatives 2.
Dehydrogenative alkenylation of uracils via palladium-catalyzed regioselective C–H activation
作者:Yi-Yun Yu、Gunda I. Georg
DOI:10.1039/c3cc41130c
日期:——
A regioselective Pd-catalyzed cross-dehydrogenativecoupling between uracils and alkenes is reported. This protocol provides easy access to a variety of 5-alkenyluracil structural motifs.
Synthesis of Conjugated Dienes via a Biomimetic Aerobic Oxidative Coupling of Two C<sub>vinyl</sub>H Bonds
作者:Nicolas Gigant、Jan-E. Bäckvall
DOI:10.1002/chem.201301771
日期:2013.8.12
A time to dienes: A highly efficient and general method has been developed to prepare conjugateddienes through a biomimetic approach. This aerobic oxidative coupling, involving two CvinylH bonds, proceeds under low Pd catalyst loading and employs catalytic amounts of p‐benzoquinone and iron phthalocyanine as electron‐transfer mediators (ETMs) under ambient oxygen pressure (see scheme).