Hetero-Diels-Alder Reaction of Phosphorylated Nitroso Alkenes with Enol Ethers on Water: A Clean Approach Toward 1,2-Oxazine Derivatives

被引:33
|
作者
de los Santos, Jesus M. [1 ]
Ignacio, Roberto [1 ]
Es Sbai, Zouhair [1 ]
Aparicio, Domitila [1 ]
Palacios, Francisco [1 ]
机构
[1] Univ Basque Country, Ctr Invest & Estudios Avanzados Lucio Lascaray, Fac Farm, Dept Quim Organ 1, Vitoria 01006, Spain
来源
JOURNAL OF ORGANIC CHEMISTRY | 2014年 / 79卷 / 16期
关键词
ORGANIC-REACTIONS; ASYMMETRIC-SYNTHESIS; 6-SILOXY-SUBSTITUTED 5,6-DIHYDRO-4H-1,2-OXAZINES; ALPHA; BETA-UNSATURATED OXIMES; BETA-AMINOPHOSPHONATES; CONJUGATE PHOSPHINYL; EFFICIENT SYNTHESIS; 4+2 CYCLOADDITIONS; AQUEOUS-MEDIA; CHEMISTRY;
D O I
10.1021/jo501339c
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A concise and eco-friendly synthesis of highly fiinctionalized 1,2-oxazines from phosphinyl- and phosphonyl-nitroso alkenes has been developed. The key step of this process, which involves a two-step sequence of reactions on-water, is a regioselective hetero-Diels Alder cycloaddition reaction of enol ethers to 4-phosphinyl or 4-phosphonyl nitroso alkenes mediated by water itself. The process has also been performed under solvent-free conditions and in organic solvents for comparison.
引用
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页码:7607 / 7615
页数:9
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