General approach for the synthesis of polyquinenes via the weiss reaction XIII. Aldol approach to fenestranes.
作者:Oreg Kubiak、Xiaoyong Fu、Ashok K. Gupta、James M. Cook
DOI:10.1016/s0040-4039(00)97602-0
日期:1990.1
intramolecular aldol cyclization (HCl/THF; Ac2O) of diketodialdehyde 5 under conditions of thermodynamic (equilibration) control furnished the 8α,12β-diacetoxytetracyclo[5.5.1.04,13.010,13]tridecane-2,6-dione 6 to provide a new entry into [5.5.5.5]fenestanes. The analogous conversion of bisaldehyde 14 into the 2,8-diacetoxytetracyclo[7.5.1.05,15.012,15]pentadecane-10,14-dione system was not successful.
在热力学(平衡)控制条件下,二酮二醛5的酸催化分子内羟醛环化反应(HCl / THF; Ac 2 O)提供了8α,12β-二乙酰氧基四环[5.5.1.04,13.010,13]十三烷-2,6-二酮6提供新的[5.5.5.5]苯丁烯类化合物。双醛14到2,8-二乙酰氧基四环[7.5.1.05,15.012,15]十五烷-10,14-二酮体系的类似转化不成功。