- 更多网络例句与缩硫醛相关的网络例句 [注：此内容来源于网络，仅供参考]
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We have had the extensive studies on theα-acetyl-α-carbamoyl ketene--acetals and its further applications, for example, their adols condensations with aldehydes giveα-alkenoyl-α-carbamoyl ketene--acetals which can be utilized as the 1,5-bielectronic five-carbon components to react with various binucleophlilic species in a [5+1] annulation.
我们小组在以前的工作中对α-乙酰基-α-胺甲酰基二硫缩烯酮在合成中的应用进行了深入的研究，如与醛缩合生成α-烯酰基-α-胺甲酰基二硫缩烯酮，将其作为1，5-双亲电五碳合成子的[5+1]成环策略等。
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Besides, The reaction of aldehydes with dithioacetate enethiolates followed by alkylation effectively gives α-hydroxyl ketene dithioacetals.
此外，用醛与硫代羧酸硫酯反应再通过烷基化也可以有效地获得α-羟基二硫缩烯酮类化合物。
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Second, we investigated the aldol reactions of the specialα-oxo ketene dithioacetals with aromatic aldehydes under the mild conditions in good yields.
在温和的条件(室温、30℃)下，高产率地实现了α-羰基二硫缩烯酮与芳香醛的缩合反应。3。
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Firstly, 3-ethylthiobutanal was prepared from crotonaldehyde reacting with ethanehiol in triethylamine with high yield. Secondly, methyl acetoacetate was converted to 6-ethylthiohept-3-en-2-one by three steps via hydrolysis, condensation with 3-ethyltio-butanal and dehydration, then 6-ethylthiohept-3-en-2-one was cycloco ndensed with dimethyl malonate by Michael addition and Claisen condensation, followed by saponification and decarboxylation to give the intermediate of 5-(2-ethylthiopropyl)-cyclohexane-1,3-dione.
首先，以巴豆醛与乙硫醇为原料，在三乙胺的催化作用下高收率制得3-乙硫基丁醛；然后从乙酰乙酸甲酯出发，通过碱水解、与3-乙硫基丁醛缩合、脱水三步反应合成6-乙硫基-3-烯-2-庚酮，接着6-乙硫基-3-烯-2-庚酮与丙二酸二甲酯通过Michael加成和Claisen缩合成环，再通过皂化和脱羧反应生成中间体5-[2-丙基]-1，3-环己二酮；再与丙酸酐反应丙酰化，最后与0-3-氯-2-丙烯基羟胺肟化，得到目标化合物烯草酮。
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Starting with two reactive methylene compounds, ethyl cyanoacetate and malononitrile, two 5-amino-1H-pyrazoles were prepared through the intermediates ketene dithioacetal.
从两个活泼亚甲基化合物开始，经过乙烯酮二硫代缩醛中间体，合成了两个5-氨基-1H-吡唑，以这个两个化合物为中间体，与芳香族和脂肪族α-溴代酮反应，而后经酸催化亚胺化互变异构后得到含咪唑并[1，2-b]吡唑甲硫醚类化合物6a-6g。
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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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The heptanal butyl mercaptal was synthesized with heptanal, sodium thiosuifate and 1bromobutane as raw materials.
以正庚醛、硫代硫酸钠和溴代正丁烷为原料，合成了正庚醛正丁硫醇缩醛。
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Acetaldehyde(0\^1 mol) was treated with n propylthiol(0\^1 mol) at 35 ℃ for 20 min to yiled 72% acetaldehyde propyl mercaptal .
以 0 。1 mol乙缩醛和 0 。1 mol 正丙硫醇为原料，35℃下在四氯化碳中反应，经红外光谱，色谱，质谱，元素分析以及核磁共振谱检测，确证了产物为乙醛正丙硫醇缩醛。
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Synthesis of organic sulfuric compounds in aqueous media is carried out by: using thio-olefin compounds with carbonyl compounds, acetal/keltone, hydrazone, oxime, osazone and enamine to synthesize mercaptal/keltone compounds in aqueous media; using thio-olefin compounds with alpha-hydroxyaldehyde/keltone or alpha-halogenated aldehyde/keltone to synthesize thia-olefin derivatives in a queous media; using thio-olefin compounds with alpha, beta-unsaturated hydroxy compounds, C-C treble bond, C-N treble bond, C-C double bond, N-N double bond, C-N double bond, C-S double bond, epoxy and its derivatives, aziridine and its derivatives, cyclopropane and its derivatives and halogenated carboxy to synthesize sulfoether compounds in a queous media.
含水介质中有机硫化合物的合成方法，本发明属于有机合成方法，用硫缩烯酮类化合物与羰基化合物、缩醛/酮、腙、肟、脎、烯胺在含水介质中合成缩硫醛/酮化合物，与α-羟基醛/酮或α-卤代醛/酮在含水介质中合成噻烯类衍生物，与α，β-不饱和羰基化合物、碳碳叁键、碳氮叁键、碳碳双键、氮氮双键、碳氮双键、碳硫双键、环氧乙烷及其衍生物、氮杂环丙烷及其衍生物、环丙烷及其衍生物、卤代烃等在含水介质，中合成硫醚化合物。
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Generally, these compounds are derived from accessible α–oxoketen dithioacetals and the common methods of preparation involve regioselective sodium borohydride 1,2-reduce of α–oxoketen dithioacetals, 1,2-nucleophilic addition of organomatals such as organomagnesium, organolithium, Reformatsky regent to α–oxoketen dithioacetals, Baylis-Hillman reaction between polarized ketene dithioacetals and aldehydes.
主要方法包括：使用硼氢化钠1，2-选择性还原α-羰基二硫缩烯酮；利用有机金属化合物（如有机镁试剂，有机锂试剂，Reformatsky试剂等）对α-羰基二硫缩烯酮进行1，2-亲核加成；通过α-羰基二硫缩烯酮与芳醛进行Baylis-Hillman反应等获得。
- 更多网络解释与缩硫醛相关的网络解释 [注：此内容来源于网络，仅供参考]
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mercaptan：硫醇<类>
mercaptide 硫醇化合物;硫醇盐 | mercaptan 硫醇 | mercaptalation 缩硫醛作用
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on the hook：陷入圈套
bred uranium 增殖(生成的)铀 | on the hook 陷入圈套 | mercaptalation 缩硫醛化作用
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hemimelus：半肢畸胎
hemimelia /半肢畸形/ | hemimelus /半肢畸胎/ | hemimercaptol /半硫代半缩醛/
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mercaptal：缩硫醛
merbromin 汞溴红 | mercaptal 缩硫醛 | mercaptan 硫醇
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mercaptal：醛缩硫醇
-lysin 溶素 | -mercaptal 醛缩硫醇 | -mercaptan 硫醇
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mercaptal：缩硫醛<类>
mercaptalation 缩硫醛作用 | mercaptal 缩硫醛<类> | menhaden oil 鲱<鱼>油
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notarially：由公证人
mercaptalation 缩硫醛化作用 | notarially 由公证人 | indivertibly 难转向地, 难分心地
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thioacetal：硫缩醛
thio acid 硫代酸 | thioacetal 硫缩醛 | thioacetamide 硫代乙酰胺
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thioacetal：醛缩硫醇
-thin 质 | thioacetal 醛缩硫醇 | -thiocarbazone 硫卡巴腙
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merbromin：汞溴红
meralluride 汞鲁来 | merbromin 汞溴红 | mercaptal 缩硫醛