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.
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