Diastereocontrol in intermolecular diels-alder reactions of allenic lactones: Synthetic approach to the plaunols
摘要:
Diels-Alder cycloaddition of the allenic lactone 11 with 1-(1-(t-butyldimethylsilyloxy)vinyl)cyclohexene 6b produces the desired cycloadduct 12 with good endo selectivity (4:1) and excellent diastereoselectivity.