[2+3] Dihydrofuran annulation via vinyloxiranation of carbonyl compounds
作者:T. Hudlicky、A. Fleming、T.C. Lovelace
DOI:10.1016/s0040-4020(01)80129-0
日期:1989.1
The resulting vinyloxiranes were transformed thermolytically to functionalized dihydrofurans. An operational comparison of this heterocyclic annulation is made with its carbocyclic counterpart, the [2+3] cyclopentene annulation, and the potential for a general dihydrofuran synthesis in either a racemic or an asymmetric fashion is addressed.
The reactions of phenolic reagents with α-bromo Michael acceptors in the K2CO3-acetone system. A stereospecific AdSNE process.
作者:Vittorio Rosnati、Antonio Saba、Aldo Salimbeni
DOI:10.1016/0040-4039(81)80178-5
日期:1981.1
α-bromo Michael acceptors undergo ipso-substitution by phenol or benzenethiol in the K2CO3-acetone system, the reaction originating the (Z) isomers, via a stereospecific AdSNE process.
α-溴Michael受体在K 2 CO 3-丙酮体系中通过苯酚或苯硫酚进行ipso取代,该反应通过立体特异性Ad SN E过程引发(Z)异构体。