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The paper presents that 7-chloro-4-nitrobenz-2-oxa-1,3-diazole and isoniazide can produce an orange condensation product in carbinol medium and a new determination way of isoniazide is found based on it.
研究了异烟肼与7氯 4 硝基苯并 2 氧，3 二氮唑在甲醇介质中生成橙色缩合产物的最佳条件，并由此建立了一种间接分光光度法测量药物中异烟肼的新方法。
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The condensation reaction,in which the yield of intermediate product after refining process was more than 90%,used iso-butylaldehyde and formaldehyde as materials,Et 3N as catalyst.The hydrogenation,in which the conversion of hydroxypivaldehyde and selectivity of NPG were respectively 99% and 95%,used Cu-ZnO as catalyst,and ethanol as solute,meanwhile in the hydrogenation,the impurity in material could also ...
缩合反应采用异丁醛和甲醛为原料，三乙胺为催化剂，在 60℃左右反应，缩合产物经减压蒸馏和结晶、干燥，得到收率为 90 %以上的中间体羟基戊醛；加氢反应采用自制的Cu -ZnO催化剂，乙醇为溶剂，在 15 0℃将HPA加氢生成新戊二醇，HPA转化率为 99%，新戊二醇收率在 95 %以上，而且HPA缩合反应的副产物在加氢反应中也转化为新戊二醇。
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Furthermore, a convenient procedure for synthesis of unsymmetric squarylium cyanies has been developed. We find the particular reactiveness between benzotellurazolium lodide and squaric acid: only 1: 1 condensation is involved in this reaction. The resultant can condense easily with benzothiazolium iodide to give unsymmetric squarylium dye of unique component.
研究了苯并碲唑季铵碘盐与方酸的特殊反应性，发现它们只发生1：1缩合，缩合产物可与苯并噻唑碘盐反应生成染料，从而提供了制备单一组分的不对称方酸碲菁染料的简便方法。
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Master the Keto-Enol tautomerism; reactions of enols:α-H substitution reactions;α-halogenation of aldehydes and ketones;α-bromination of carboxylic acids; acidity ofα-H atoms: enolate ion formation; reactivity of enolate ions; alkylation of enolate ions; mechanism of carbonyl condensation reactions;condensations of aldehydes and ketones: the Aldol reaction; dehydration of Aldol products; the Claisen condensation reaction; the Michael addition.
熟练掌握酮式－烯醇式互变异构；烯醇的反应：α-H的活性；醛酮的α卤代反应；羧酸的α-溴代反应；α-H的酸性：烯醇负离子的形成；烯醇负离子的反应；烯醇负离子的烃基化；羰基化合物的缩合反应机理；醛酮的缩合反应－Aldol缩合；Aldol缩合产物的脱水反应； Cleisen 酯缩合反应；麦克尔加成反应。
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In this catalyst system, the Knoevenagel condensations of a series of aromatic aldehydes with malononitrile or ethyl cyanoacetate were programmed and a mechanism was postulated as well. When aromatic aldehydes reacted with ethyl cyanoacetate, the corresponding alkenes proved to be E-isomers by 1H NMR.
在该反应体系中考察了一系列芳香醛和丙二氰、氰基乙酸乙酯的缩合反应，并推测了Knoevenagel缩合反应的机理，芳香醛与氰基乙酸乙酯缩合产物经1H NMR检测为E式烯烃。
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A spectrophotometric simultaneous determination of glutaraldehyde and ethanal based on the reaction between gluaradehyde or ethanal and thiobarbituric acid in acetic acid solution is described.
在醋酸介质中，硫代巴比妥酸与戊二醛及乙醛分别可生成2∶1及1∶1的缩合产物，这两种缩合产物在可见光区具有不同波长的最大吸收，籍此可同时测定戊二醛及乙醛。
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Then, N-(5-nitro-6-chloro-3-pyridinemethyl) phthalimide is obtained after the nitrating reaction of N-(6-chloro-3-pyridine methyl) phthalimide. The yield of the obtained product is 90.5%, and its melting point is 143.1~143.8℃.
缩合产物再经过硝化，合成N-（5-硝基－6-氯－3-吡啶甲基）邻苯二甲酰亚胺，其熔点为143.1~143.8℃，收率为90.5%。
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The IR spectra of the copolymers demostrate that copolymers were polycondensation product of homopolymer of propargyl alcohol with phthalic acid.
IR光谱证明了共聚物是邻苯二甲酸与丙炔醇均聚物的缩合产物。
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The invention relates to condensation products comprised of cyclic carboxylic acid anhydrides of dicarboxylic acids, tricarboxylic acid anhydrides or tetracarboxylic acid anhydrides and difunctional polyamines, especially polyoxyalkylene amines.
本发明涉及由二元羧酸的环状羧酸酐、三羧酸酐或四羧酸酐和二官能化多胺，特别是聚氧化烯胺制备的缩合产物。
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Recent advances in addition,reduction,and asymmetric reactions of imines were reviewed.
亚胺是一类羰基化合物与氨的缩合产物，作者综述了近年国内外亚胺在加成、还原和不对称反应等方面的研究进展
- 更多网络解释与缩合产物相关的网络解释 [注：此内容来源于网络，仅供参考]
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biuret：缩二脲
3.3.2 缩二脲(Biuret) 缩二脲是由两分子尿素通过热缩合脱氨的产物. 是一种既带酸性有带碱性的物化合物. 化学名称氨基甲酰脲,结构式为H2NCONH-CONH2,分子量103.13. 纯品缩二脲为白色长单斜晶体,有一定的吸湿性,结晶水合物为5C2H5O2N3-4H2O,
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micrococcus：微球菌属
在微球菌属(Micrococcus)作为乙醛酸代谢的中间产物,与甘氨酸结合,经羟基天门冬氨酸而成草酰乙酸. 在假单胞菌属(Pseudomonas)或大肠杆菌中,二分子缩合经酒石酸半醛而转变成甘油. 在乙醛酸脱羧酶作用下脱羧则转变成蚁酸,
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salit：水杨酸冰片酯
salish 撒利史语 | salit 水杨酸冰片酯 | salitannol 水杨酸单宁酸缩合产物
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amino resins：氨基树脂
由尿素、三聚氰胺(melamine)等氨基化合物与甲醛缩合反应所生成的可溶性产物一般统称为氨基树脂(Amino resins). 其中,脲醛树脂(UF)成本低,广泛用作木材产品的胶粘剂,而较贵的三聚氰胺-甲醛树脂(MF)则主要用作层压树脂,