Triphenylphosphine Reduction of Saturated Endoperoxides
作者:Ihsan Erden、Christian Gärtner、M. Saeed Azimi
DOI:10.1021/ol901652u
日期:2009.9.3
Triphenylphosphinereduction of saturated endoperoxides derived from 6,6-dimethylfulvene and spiro[2.4]hepta-4,6-diene in the presence of nucleophiles results in the formation of products that mainly stem from deoxygenation followed by carbocation formation. Nucleophilic attack by solvent proceeds by an SN1 like mechanism; allyl shifts and cyclopropylcarbinyl-cyclobutyl rearrangements also occur. With
在亲核试剂存在下,衍生自 6,6-二甲基富烯和螺 [2.4] 庚-4,6-二烯的饱和内过氧化物的三苯基膦还原导致产物的形成,这些产物主要源于脱氧,然后是碳正离子的形成。溶剂的亲核攻击通过类似S N 1 的机制进行;烯丙基转移和环丙基羰基-环丁基重排也会发生。由于系统缺乏碳正离子稳定基团,脱氧步骤之前是 H 2 O攻击磷。