One-Pot Synthesis of Dispiro[oxindole-3,3′-pyrrolidines] by Three-Component [3+2] Cycloadditions of<i>in situ</i>-Generated Azomethine Ylides with 3-Benzylidene-2,3-dihydro-1<i>H</i>-indol-2-ones
作者:Firouz Matloubi Moghaddam、Mostafa Kiamehr、Mohammad Reza Khodabakhshi、Marjan Jebeli Javan、Shaghayegh Fathi、Alexander Villinger、Viktor O. Iaroshenko、Peter Langer
DOI:10.1002/hlca.201200602
日期:2013.11
An efficient one‐pot, three‐component synthesis of novel dispiro[oxindole‐3,3′‐pyrrolidines] by 1,3‐dipolar cycloaddition of azomethine ylides, in situ generated by reaction of 1,2‐diones with sarcosine and subsequent decarboxylation, with a series of (E)‐3‐benzylidene‐2,3‐dihydro‐1H‐indol‐2‐ones is reported. Molecular complexity is generated in only one synthetic step. All reactions proceed with excellent
1,2-二酮与肌氨酸的反应及随后的脱羧反应原位生成偶氮甲亚胺的1,3-偶极环加成反应,从而有效地一锅三组分合成新型双螺[oxindole-3,3'-吡咯烷] ,报告了一系列(E)-3-亚苄基-2,3-二氢-1 H-吲哚-2-酮。分子复杂性仅在一个合成步骤中产生。所有反应均以优异的区域选择性和良好至优异的产率进行。后处理容易,反应时间短,并且不需要催化剂。