1) Claisen-Schmidt condensation
Claisen-Schmidt缩合
1.
Piperonylene propanal was synthesized through Claisen-Schmidt condensation reaction in the presence of KF/Al2O3,heliotropin and propanal as reactants.
KF Al2O3作催化剂,催化洋茉莉醛和丙醛进行Claisen-Schmidt缩合反应合成了亚胡椒基丙醛。
2.
A series of substituted-2 -hydroxychalcone in yields of 48%～90% were synthesized by Claisen-Schmidt condensation from substituted 2 -hydroxyhypnone and substituted benzaldehyde under room temperture.
取代-2′-羟基苯乙酮与取代苯甲醛在室温下经过Claisen-Schmidt缩合,合成了一系列取代2′-羟基查尔酮类化合物(3a~3w,其中3d~3w为新化合物),收率48%~90%,其结构经1H NMR和IR表征。
3.
Via Claisen-Schmidt condensation and hydrogenation reaction, raspberry ketone was synthesized by using p-hydroxybenzaldenhyde as the main raw material.
本文以对羟苯甲醛为主要原料,通过Claisen-Schmidt缩合、加氢还原二步反应合成覆盆子酮;根据气味分子结构理论设计、合成了四个覆盆子酮类似物,采用红外光谱、核磁共振及质谱等分析方法对合成产物的结构进行了表征,并经调香师对其进行评香,确定这些化合物具有作为香料的应用前景。
2) Claisen-Schmidt condensation reaction
Claisen-Schmidt缩合反应
1.
Investigation on activity of Claisen-Schmidt condensation reaction for different substituted benzaldehyde compounds;
不同取代芳醛Claisen-Schmidt缩合反应活性研究
2.
Investigation of Claisen-Schmidt condensation reaction using near-critical water as media indicated that the reaction can be carried out in near-critical water without any added catalyst.
对近临界水中苯甲醛与丙酮的Claisen-Schmidt缩合反应的研究表明,在没有外加任何催化剂的条件下,苯甲醛与丙酮可顺利地发生缩合反应,近临界水在其中兼作溶剂和催化剂,避免了碱催化剂的使用和随后繁杂的中和、分离步骤以及产生废弃盐等弊端。
3) Claisen condensation
Claisen酯缩合
1.
Sodium diethyl oxalacetate was prepared by Claisen condensation of diethyl oxalate with ethyl acetate.
以乙酸乙酯和草酸二乙酯为原料,经交叉Claisen酯缩合反应合成2-氧代丁二酸二乙酯钠盐,用此盐与苯肼在酸性条件下进行加成缩合反应制得苯腙,再经闭环、酸化可制得1-苯基-3-羧酸乙酯-5-吡唑啉酮。
2.
Sodium diethyl oxalacetate was prepared by Claisen condensation with acetic and oxalic acid esters.
以乙酸乙酯和草酸二乙酯为原料 ,经交叉Claisen酯缩合反应合成钠代草酰乙酸乙酯 。
4) Claisen condensation
Claisen缩合
1.
Two new β-diketones containing trifluoromethyl groups,4,4,4-trifluoro-1-(6-methoxynaphthalen-2-yl)butane-1,3-dione and 4,4,4-trifluoro-1-(4-phenylmethoxyphenyl)butane-1,3-dione were synthesized from aromatic ketones and ethyl trifluoracetate by the classical Claisen condensation reaction using CH3ONa as the strong base.
芳香酮和三氟乙酸乙酯在强碱CH3ONa作用下发生经典Claisen缩合反应,合成了两种未见文献报道的含氟β-二酮:4,4,4-三氟-1-(6-甲氧基-2-萘基)-1,3-二酮和4,4,4-三氟-1-(4-苄氧基苯基)-1,3-二酮。
2.
Two UV-A ultraviolet absorbents:1-(4-methoxy-phenyl)-3-phenylpropane-1,3-dione and 1-(4-tert-butylphenyl)-3-(4-methoxyphenyl) propane-1,3-dione were synthesized from aromatic ketone and ester by classical Claisen condensation using NaNH_2 as strong alkali.
通过芳香酮和芳香酯在强碱NaNH2条件下的Claisen缩合反应,合成了两种β-二酮类化合物1-(4-甲氧基苯基)-3-苯基-1,3-二酮与1-(4-甲氧基苯基)-3-(4-叔丁基苯基)-1,3-二酮,并通过元素分析、紫外光谱、红外光谱和核磁共振对其组成与结构进行了确证和表征。
3.
In the reaction process,the intermediate phenyl-1-nitrilebenzylketone obtained by Claisen condensation in basic condition was not separated from the reaction mixture,but used directly to synthesize the targeting molecule by hydrolyzing in 48% HBr solution.
以苯乙氰和苯甲酸甲酯为起始原料,在碱性条件下,采用Claisen缩合合成中间产物苯基-1-氰基苄基甲酮,不经分离,直接在48%氢溴酸水溶液中水解脱羧得到苯基苄基甲酮,产率为92。
5) Schimdt-Claisen condensation
Schimdt-Claisen缩合
6) claisen-schmidt reaction
Claisen-Schmidt反应
1.
β-nitrostyrene was synthesized by ultrasonic Henry reaction and the accessory ingredient of alcohol Claisen-Schmidt reaction,using benzaldehyde and nitromethane as raw materials.
分别研究了在超声波辅助Henry反应和甲醇助剂存在Claisen-Schmidt反应的条件下由苯甲醛、硝基甲烷合成β-硝基苯乙烯的反应条件,发现Claisen-Schmidt反应条件下收率最高,产率为84%。
补充资料：Hilbert-Schmidt算子
Hilbert-Schmidt算子
HEbert-Sdwiidt operator
卜日恢时一欣加止血算子【111七鱿一S如口峨q脚m奴;r.。‘-卿Ta一IllM助Ta ouep盯op] 一个作用于E山h滋空间H上的算子，使得对H中的任何规范正交基{x，}，下述条件满足: ]}川l’=Z}I众*!}’<二(然而，这只需对某个基成立).一个Hilbert一汝如面出算子是紧算子(印几，碱。详份幻r)，对于它，条件艺4又‘(注)l’簇艺s子(通)=}}通I}’=Tr(月’注)适用于它的s数s‘(A)以及它的本征值几j(A);其中A‘A是一个迹类算子(A’是A的伴随，而TrC是算子C的迹).一个固定的空间H(1)上所有的到山坟成一S比叨记t算子的集合构成一个具有标量积 二Tr(AB’)的Hilbert空间.如果R*(A)=(A一班犷，是A的预解式，且 detZ(E一zA)=fl(l一z又‘(注))。:，“A，是它的乎则侈特解行烈拳(1飞山rized cha.汰油ticde-把仃区班川t)，那么。川日匡旧刀不等式(。州日比旧n比明-lity)}{，.「_1 Jl_，月、11/.rl「二}}A1l泊 }}det，!E一舟A}凡(A)}【城以}exP}专}l+书共号~日!l一，『又一」一“‘一’}}’“’一LZL一以犷」」成立. E山比找一女坛面dt算子的一个典型代表是H训晚找-S如汕血积分算子(E山比n一阮Innidtin魄间。详几幻r)(它说明了名称的起源).M.H.Bo如盯o跳.亩撰【补注】A的，数或奇导谭(singularM司u图)是自共扼算子A’A的(正)本征值.代替Hil坟滋一S上功记1算子，人们也说“H川笼rt.压为功记t类的”算子.Hjl-bert空间上的有界算子称为属于淬举(姗cl理洛)，如果对于任意的完全规范正交系{叭}，{价，}有艺
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