H-1, C-13 and N-15 NMR spectra of the reaction product of benzenediazonium fluoroborates with 1-phenyl-3-methyl-4-(alpha-acet-ethylidene)-pyrazol-5-one

被引：1
|
作者：
Lycka, A [1 ]
Mustroph, H [1 ]
机构：
[1] FEW MBH,D-06756 WOLFEN,GERMANY
来源：
DYES AND PIGMENTS | 1997年 / 34卷 / 02期
关键词：
5'-hydroxy-5,5'-dimethyl-2-phenyl-1'-phenyl-1,5'-dihydro-2H-[4,4']bipyrazolylidene-3-ones; H-1; NMR; C-13; N-15;
D O I：
10.1016/S0143-7208(96)00069-1
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Contrary to previously published data (Mustroph and Each, Z. Chem, 1985), we have found that the reaction product of CX-benzenediazonium fluoroborates (X = H, NO2) with 1-phenyl-3-methyl-4-(alpha-acet-ethylidene)-pyrazol-5-one corresponds to 5'-hydroxy-5,5'-dimethyl-2-phenyl-1'-(4-X-phenyl)-1',5'-dihydro-2H-[4,4']bipyrazolylidene-3-ones (4a,b) and not to compounds 3. The structural elucidation is based on analysis of H-1, C-13 and N-15 NMR spectra of non- and N-15-selectively labelled samples. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码：101 / 107
页数：7
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