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首页> 外文期刊>Comptes Rendus Chimie >Ultrasound assisted synthesis of Cs_(2.5)H_(0.5)PW_(12)O_(40): An efficient nano-catalyst for preparation of β-amino ketones via aza-Michael addition reactions
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Ultrasound assisted synthesis of Cs_(2.5)H_(0.5)PW_(12)O_(40): An efficient nano-catalyst for preparation of β-amino ketones via aza-Michael addition reactions

机译：超声辅助合成Cs_（2.5）H_（0.5）PW_（12）O_（40）：一种通过氮杂-迈克尔加成反应制备β-氨基酮的高效纳米催化剂

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摘要

The heterogeneous nano-catalyst Cs_(2.5)H_(0.5)PW_(12)O_(40), with an average partide size of 22.2 nm and surface area of 49.16 m~2g~(-1) was prepared under ultrasound irradiation and characterized by IR, SEM, EDX, XRD, BET and TGA. The nano-catalyst (2 mol %) was applied to synthesize some β-amino ketone derivatives in good yields at roorn temperature. These derivatives were characterized by ~1H, ~(13)C NMR, IR and UV spectroscopies. Moreover, the structure of 3-(4-bromophenylarnino)-1-phenyl-3-p-torylpropan-1-one was studied by single crystal X-ray determination. The products of undesirable side reactions resulting from 1,2-addition, polymerization and bis-addition were not observed.
机译：在超声辐照下制备了平均粒径为22.2 nm，比表面积为49.16 m〜2g〜（-1）的多相纳米催化剂Cs_（2.5）H_（0.5）PW_（12）O_（40）。通过IR，SEM，EDX，XRD，BET和TGA。纳米催化剂（2mol％）被用于在焙烧温度下以良好的产率合成一些β-氨基酮衍生物。这些衍生物的特征在于〜1H，〜（13）C NMR，IR和UV光谱。此外，通过单晶X射线测定研究了3-（4-溴苯基亚氨基）-1-苯基-3-对-甲苯基丙烷-1-酮的结构。没有观察到由于1，2-加成，聚合和双加成引起的不良副产物。

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