François David, Maden Amy, Murray William V
Johnson & Johnson Pharmaceutical Research and Development, LLC, 1000 Route 202, Box 300, Raritan, New Jersey 08869, USA.
Org Lett. 2004 Jun 10;6(12):1931-4. doi: 10.1021/ol049640n.
[structure: see text] Intramolecular [4 + 2] cycloaddition using alpha,beta-unsaturated oximes was explored. The reactions proceeded under unusually facile conditions to furnish the nitrones. The latter were subsequently reacted with DMAD to afford [3 + 2] cycloaddition products.
[结构:见正文] 对使用α,β-不饱和肟的分子内[4 + 2]环加成反应进行了探索。反应在异常温和的条件下进行,生成硝酮。后者随后与富马酸二甲酯反应,得到[3 + 2]环加成产物。