Double 1,4-addition of malonate to 1,2-diaza-1,3-butadienes: a useful route to previously unknown symmetric and unsymmetric 1,6-dioxo-2,7-diazaspiro[4.4]nona-3,8-dienes

被引：9
作者：
Attanasi, OA [1 ]
De Crescentini, L [1 ]
Filippone, P [1 ]
Mantellini, F [1 ]
机构：
[1] Univ Urbino, Ist Chim Organ, I-61029 Urbino, Italy
来源：
NEW JOURNAL OF CHEMISTRY | 2001年 / 25卷 / 04期
关键词：
D O I：
10.1039/b009189h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In the presence of sodium methoxide in tetrahydrofuran, 1,2 diaza-1,3-butadienes react with dimethyl malonate in a 2:1 molar ratio to give symmetric or unsymmetric bishydrazones that in turn produce new 1,6-diolo-2,7-diazaspiro [4.4]nona-3,8-dienes, as a consequence of a double ring closure, an treatment dth sodium methoxide in methanol.
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页码：534 / 537
页数：4
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