Division of Pharmaceutical Sciences, Department of Chemistry, University of Wisconsin, Madison, Madison, WI 53705, USA.
Chemistry. 2011 Mar 28;17(14):3812-22. doi: 10.1002/chem.201100260. Epub 2011 Mar 7.
The use of heteroatom-substituted oxyallyl cations in (4+3) cycloadditions has had a tremendous impact on the development of cycloaddition chemistry. Extensive efforts have been exerted toward investigating the effect of oxygen, sulfur, and halogen substituents on the reactivity of oxyallyl cations. Most recently, the use of nitrogen-stabilized oxyallyl cations has gained prominence in the area of (4+3) cycloadditions. The following article will provide an overview of this concept utilizing nitrogen-stabilized oxyallyl cations.
杂原子取代的氧杂烯丙基阳离子在（4+3）环加成反应中的应用对环加成化学的发展产生了巨大的影响。人们已经付出了大量的努力来研究氧、硫和卤素取代基对氧杂烯丙基阳离子反应性的影响。最近，氮稳定的氧杂烯丙基阳离子在（4+3）环加成反应领域的应用引起了人们的关注。本文将利用氮稳定的氧杂烯丙基阳离子对此概念进行概述。
