Pinanyldioxy styrylboronic ester (1) was employed for asymmetric 1,3-dipolar cycloaddition with nitrile oxides, optically active Δ2-isoxazolines (3) or 4-hydroxy- Δ2-isoxazolines (4) were obtained. The effect of dif...Pinanyldioxy styrylboronic ester (1) was employed for asymmetric 1,3-dipolar cycloaddition with nitrile oxides, optically active Δ2-isoxazolines (3) or 4-hydroxy- Δ2-isoxazolines (4) were obtained. The effect of different bases on the selectivity of the cycloaddition reaction was studied.展开更多
基金Project (No. 95QA14028) supported by the Star of ScienceTechnology Foundation of Shanghai.
文摘Pinanyldioxy styrylboronic ester (1) was employed for asymmetric 1,3-dipolar cycloaddition with nitrile oxides, optically active Δ2-isoxazolines (3) or 4-hydroxy- Δ2-isoxazolines (4) were obtained. The effect of different bases on the selectivity of the cycloaddition reaction was studied.
