Approaches to the synthesis of cytochalasans. Part 10. Cuprates as reagents for the formation of C?C bonds
作者:Michael Matthes、Christoph Tamm
DOI:10.1002/hlca.19910740720
日期:1991.10.30
Based upon our novel concept for the total synthesis of cytochalasans, the model lactams 2–9 were treated with Bu2Cu(CN)Li2. The results of these conversions vary much from those obtained with Ph2Cu(CN)Li2, demonstrating the uncertainty of predictions in cuprate chemistry. The bicyclic compound 20 was prepared in good yield. However, all attempts to convert p-toluenesulfonate 20 into the Ph-substituted