Synthesis of fluorescent trisubstituted oxazoles via a facile tandem Staudinger/aza-Wittig/isomerization reaction
Synthesis of fluorescent trisubstituted oxazoles via a facile tandem Staudinger/aza-Wittig/isomerization reaction
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通过简单的串联 Staudinger/aza-Wittig/异构化反应合成荧光三取代恶唑
DOI:
10.1016/j.dyepig.2016.12.040
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发表时间:
2017-04
影响因子:
4.5
通讯作者:
Ding Ming-Wu
中科院分区:
文献类型:
--
作者:
Xie Hai;Rao Yong;Ding Ming-Wu
A new facile synthesis of trisubstituted oxazoles starting from azides was developed. The reactions of azides with triphenyl phosphine afforded the corresponding 2,4,5-trisubstituted oxazole derivatives via tandem Staudinger, aza-Wittig and isomerization reaction either thermally or under basic conditions. Properties of the oxazole derivatives were surveyed and some of the examples showed reasonable fluorescence. The greatest fluorescence intensity was observed when the 2- and the 5- substituents on the oxazole ring were aromatic groups (withε= 2.3–3.0 × 104mol−1dm3cm−1andΦ= 0.25–0.29 relative to quinine sulphate). However, the fluorescence intensity was diminished when either the 2- or the 5-substituent was H or alkyl.
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影响因子:
3.2
作者:
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通讯作者:
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影响因子:
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影响因子:
2.1
作者:
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通讯作者:
Vilaca, Helena
影响因子:
2.7
作者:
Roy Chowdhury S;Maini R;Dedkova LM;Hecht SM
通讯作者:
Hecht SM