General approach for the stereocontrolled synthesis of tricyclic lactones via allene intramolecular cycloaddition. An application to the synthesis of (±)-platyphyllide
作者:Kenji Hayakawa、Satoru Ohsuki、Ken Kanematsu
DOI:10.1016/s0040-4039(00)84145-3
日期:1986.1
A new synthesis of tricyclic lactones via allene intramolecular cycloaddition and its application to synthesis of (±)-platyphyllide are described.
描述了一种通过丙二烯分子内环加成反应合成三环内酯的新方法及其在(±)-叶绿素内酯合成中的应用。
Stereoselective Synthesis of Polycycles Containing an Aziridine Group: Intramolecular aza-Diels-Alder Reactions of Unactivated 2H-Azirines with Unactivated Dienes
with a pendent diene can undergo thermal decomposition to a related azirine intermediate, which was used immediately in an intramolecular aza‐Diels–Alderreaction to furnish an aziridine‐containing trans‐fused tricyclic core structure with excellent stereoselectivity. The method provides a facile entry to complex polycyclic alkaliods which can be further elaborated by ring‐opening reactions and ring expansion
A highly efficient synthesis of bicyclo[n.3.1] ring systems by allene intramolecular cycloaddition: Tandem intramolecular [2+2] cycloaddition-[3,3]-sigmatropic rearrangement
作者:Kenji Hayakawa、Satoru Ohsuki、Ken Kanematsu
DOI:10.1016/s0040-4039(00)84950-3
日期:1986.1
A novel one-step construction of bicyclo[5.3.1]undecane skeleton via intramolecular cycloaddition of allenyl ethers is described.
描述了一种通过烯丙基醚的分子内环加成的双环[5.3.1]十一烷骨架的新颖的一步构建方法。
Competitive intramolecular [4 + 2] cycloaddition and tandem [2 + 2] cycloaddition/ [3,3]-sigmatropic rearrangement sequence of allenyl 3-vinyl-2-cyclohexenyl ethers: evidence for switching of the reaction pathway by the substituent effects
Les reactions de cycloaddition de (propargyl vinyl-3 cyclohexene-2yl) ethers passent par des intermediaires (allenyl vinyl-3 cyclohexene-2yl) ethers, isoles dans certains cas
Les reaction de cycloaddition de (propargylvinyl-3 cyclohexene-2yl) ethers passent par des intermediaires (allenylvinylvinyl-3 cyclohexene-2yl) ethers, isoles dans某些 cas