An Efficient Strategy for the Synthesis of α,α′-cis and trans-Disubstituted Medium Ring Ethers
作者:Michael T. Crimmins、Kyle A. Emmitte
DOI:10.1055/s-2000-6268
日期:——
An asymmetric alkylation-ring-closing metathesis strat- egy was developed for the construction of a,a'-disubstituted medi- um ring ethers. The approach features an asymmetric alkylation of highly functionalized a-alkoxy acyl oxazolidinones followed by ring closure effected by Grubbs ' ruthenium catalyst. The relation- ship between diene conformation and the rate of ring-closure was examined.