Efficient synthesis of bibutenolide derivatives through oxidative dimeric cyclization-coupling reaction of 2,3-allenoic acids.
An oxidative coupling-dimerization reaction of 2,3-allenoic acids was observed to provide an efficient route to bibutenolide derivatives, which are not readily available. A new system (PdCl(2)/RI/air) for regeneration of the palladium(II) catalyst was also established. [reaction: see text]
Ma
Shengming
S
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China. masm@pub.sioc.ac.cn
Yu
Zhanqian
Z