硫酮

In the presence of palladium catalyst and triphenylphosphine, alkynyl Grignards or alkynyllithiums could successfully couple with alkyl bromides and iodides. Aryl-substituted propargylic dithioacetals could also be obtained by this strategy.

在钯触媒和三苯基磷的存在下，我们可利用炔基格林那试剂或炔基锂和简单的卤烷进行偶合，而这样的反应条件也能应用在苯基取代炔丙基硫缩酮衍生物的合成上。

A range of oligoaryls having alternating para- or meta-benzene-furan rings is synthesized by rapid convergent/divergent method from the annlation of a propargylic dithioacetal and an aldehyde having a propargylic dithioacetal moiety as the substituent.

中文摘要结合分流法/汇集法，利用炔丙基硫缩酮单体和另一具有醛基的单体进行环化反应，可以迅速合成对位及间位取代苯环呋喃交错寡聚物。

A new photochromic organic compound of thiosemicarbazone, 4-( p -bromo-α-methylaminothiocarbonyl hydrazonobenzal)-2,5-dihydro-3-methyl-5-oxo-1-phenyl pyrazole, was synthesized and characterized by elemental analyses, IR, 1H NMR spectra, and X-ray single-crystal diffraction analysis.

文章合成了一个新的有机化合物1-苯基-3-甲基-4-对溴苯亚甲基-吡唑啉酮-5 缩甲基氨基硫脲(1)，并分别用元素分析、红外光谱、氢核磁共振及X-射线单晶衍射对化合物的结构进行了确证和表征。

Studies on the Synthesis, Crystal Structures and Photochemical Photochemical Properties of Pyrazolone Thiosemicarbazones

论文标题：吡唑啉酮缩氨基硫脲类化合物的合成，晶体结构及光化学性质研究

On the basis of previous work in our laboratory, several novel thiosemicarbazones and semicarbazone compounds containing pyrazolone-ring have been synthesized.

本文在实验室原有工作的基础上，合成了以吡唑啉酮环为变色主体的缩氨基脲、氨基硫脲类有机光致变色化合物，通过对固态光致变色性质和晶体结构的研究，深入分析了它们的变色机理，并总结了光致变色性质与之间结构的关系。

The comparison test of this new methodwith spray inoculation method was conducted. The results showed the former method could increase the incidence ofdisease and uniformity than the latter one. Used cotyledon-brushing with conidial suspension and fungicide foliarspraying method, the EC 50 values of hexaconazole, myclobutanil, triadimefon, thiophanate-methyl and chlorotha lonil to Sphaerotheca fuliginea treated in different time after inoculation were determined; the results showed that 96 h was better time for disease severity evaluating.

比较了白粉病菌分生孢子悬浮液涂抹法和喷雾法接种黄瓜幼苗子叶的效果，结果表明，涂抹法发病率高，均匀度更好；测定了接菌后不同时间施药，白粉病菌对己唑醇、腈菌唑、三唑酮、甲基硫菌灵和百菌清等 5 种杀菌剂的敏感性，结果表明，接菌后 96h 施药较为敏感，测得的 EC 50 较小。

The side chain of thioacetic acid has been sythesized from the material of acetic acid via four steps, then synthesized the key intermediate of 2-hydroxypenem via displacement, P〓induced cyclization and hydrolyzed reaction from the material of azetidinone.

以羟乙酸为原料，经四步反应合成了侧链化合物硫基取代的羟乙酸，发生取代反应导入到经七步合成的单环氮杂环丁酮中，然后发生酰化，Wittig诱导环化，水解等五步反应合成关键中间体2-羟甲基青霉烯。

Based on our early work, we will discuss the coupling the reaction of α-cyano ketenedithioacetals with Baylis-Hillman adducts.

基于以上的研究，本文着重讨论了α-氰基二硫缩烯酮与Baylis-Hillman加成产物的偶联反应。

Totally, 147 flavor compounds, which comprised of 17 acids, 12 alcohols, 16 aldehydes, 36 esters, 12 furans, 13 ketones, 14 miscellaneous compounds, 8 phenols, 6 pyrans, 4 pyrazines, 3 pyrroles, 6 sulfur-containing compounds, were identified.

共鉴定出147种风味化合物，其中酸类17种、醇类12种、醛类16种、酯类36种、呋喃12种、酮类13种、杂环化合物14种、酚类8种、吡喃6种、吡嗪类4种、吡咯3种、含硫化合物6种。

As far as these organic matters are concerned, there are as much sixteen kinds of low molecular weight organic acids and Aldehyde, Alcohol, Ketone, Carboxylic acid, Carboxylic acid, Furan, Pyrazine, Fat hydrocarbon, sulphide and so on. The results have also shown that the content of Aldehyde, Alcohol, Fat hydrocarbon, Carboxylic acid, Furan, Pyrazine, sulphide in composted production amended with NMF inoculants increased 6.5%、9.2%、5.7%、15.6%、9.8%、11.3% and 28.6%, respectively.

研究证实添加微生物腐熟菌剂的奶牛粪堆肥产品中醛类、醇类、酯类、羧酸类、呋喃类、吡啶类和含硫类等低分子有机化合物的相对含量比未添加NMF微生物腐熟菌剂分别增加6.5%、9.2%、5.7%、15.6%、9.8%、11.3%和28.6%，而酮类、脂肪族碳氢化合物的相对含量则分别减少11.4%和15.5%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。