1) active hydrogen compounds
含活泼氢化合物
2) active hydrogen compound
活泼氢化合物
3) fluorine-containing active methylene compounds
含氟活泼亚甲基化合物
4) acid labile compound
酸活泼化合物
5) active methylene compounds
活泼亚甲基化合物
1.
Chapter 2: Michael addition of chalcones with various of active methylene compounds such as diethyl malonate, phenylacetonitrile, malononitrile, ethyl acetoacetate, cyclohexanone catalyzed by KF/basic Al_2O_3 results Michael adducts in 20%-98% yields under grinding in 20-90 min at room temperature.
第二章:本章主要研究了研磨条件下碱性氧化铝固载氟化钾催化的查尔酮与活泼亚甲基化合物,如:丙二酸二乙酯、苯乙腈、丙二腈、乙酰乙酸乙酯、环己酮等的迈克尔反应,反应在20-90分钟内完成,得到收率为20%-98%的迈克尔加成产物。
2.
This thesis consists of four chapters:Chapter 1: Michael addition of chalcones with active methylene compounds such as diethyl malonate, ethyl acetoacetate and nitromethane catalyzed by potassium hydroxide in anhydrous ethanol results Michael adducts in 72-98% yield under ultrasound irradiation in 25-150min.
第一章：研究了超声辐射下，氢氧化钾催化的查耳酮与活泼亚甲基化合物如丙二酸二乙酯、乙酰乙酸乙酯和硝基甲烷的迈克尔反应。
3.
An Efficient NH2SO3H-catalyzed direct alkylation of active methylene compounds with benzylic and allylic alcohols has been reported.
报道了氨磺酸催化的活泼亚甲基化合物和醇的直接烷基化反应新方法。
6) active methylene compound
活泼亚甲基化合物
1.
Six kinds of phenyl hydrazones were synthesized by the reaction of ice bath using aromatic dia- zonium salt and active methylene compounds.
在冰盐浴条件下,芳香族重氮盐与活泼亚甲基化合物反应,合成了六种新芳香族腙类衍生物。
2.
Yb(OTf)3 catalyzed efficiently Knoevenagel condensation of active methylene compounds with various aldehydes under solvent free condition was described as a method for preparation of substituted ole-fins.
在Yb(OTf)3催化下,不用任何溶剂,将活泼亚甲基化合物和各类醛进行Knoevenagel反应,得到相应的取代烯烃衍生物。
3.
The Knoevenagel condensations of various carbonyl compounds with active methylene compounds were reported in water medium without adding any catalyst.
报道了水相中无催化剂下各种羰基化合物与活泼亚甲基化合物的Knoevenagel缩合反应。
补充资料：活泼氢当量
分子式：
CAS号：
性质：环氧树脂所用胺类固化剂之胺含一个活泼氢的相当量(克/相当量)，即胺的平均分子量除以所含活泼氢数量所得的值。如二亚乙基三胺H2N—(CH2)2NH—(CH2)2—NH2，分子量103.2，含5个活泼氢，其活泼氢当量为103.2/5=20.6；又如间苯二胺分子量108，含4个活泼氢，其活泼氢当量为108/4=27。
CAS号：
性质：环氧树脂所用胺类固化剂之胺含一个活泼氢的相当量(克/相当量)，即胺的平均分子量除以所含活泼氢数量所得的值。如二亚乙基三胺H2N—(CH2)2NH—(CH2)2—NH2，分子量103.2，含5个活泼氢，其活泼氢当量为103.2/5=20.6；又如间苯二胺分子量108，含4个活泼氢，其活泼氢当量为108/4=27。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条