A series of antimony mercaptide compounds which formula are Sb 〓 and Sb S (CH〓〓COOR 〓(R represents an alkyl or aryl, aralkyl, n=0～2) have been synthesized. A new synthetic method has been invented to solve the defect of abroad patent method which has complex technological conditions and singleness intermediate compounds. A new catalyst QL-1 and preactivated antimony trioxide and other means have been used to avoid neutralizing, washing, separating and other procedures of intermediate and simplifing process flow at the same time. According to this new technique, a series of antimony mercaptides and their intermediate products have been synthesized with high yield.

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Burning experiments,thermodesorption analysis,ESCA,SIMS and ESR studies,is showed that quinone/hydroquinone and/or aroxyl/phenol groups are the catalytically active cen- tres.

采用不同的分析技術(shù)国产中文，如燃燒實(shí)驗(yàn)、熱解吸分析天天操屄、電能譜人人伦av社区、二次離子質(zhì)譜和電子自旋共振的研究，表明醌/氫醌和芳氧基/苯酚基團(tuán)是催化活性中心aigao激情在线观看视频。

Five types of compounds were synthesized via modification of the leading compounds, Mannich bases of cyclopentanones. Among the target compounds, one type was aromatic amine derivatives of a leading compound, three were Mannich bases of a - benzylidene cyclopentanone, the fifth was a Mannich base of a - benzyl cyclopentanone.

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Scape erect or slightly slanting, 30cm high, 1-2flowered, flowers large, white ,8-10cm across, fragrant; sepals oblong-lanceolate, 6cm long, 2cm wide, faintly tinted green at base; petals slightly smaller than sepals, lip 3-lobed, side lobes erect, spotted purple-red, mid –lobe pendent, blotched yellow and irregularly spotted purple-red in middle ,wavy at margin, lamellae yellow ,short-hairy .

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Novel sodium 2-2-(alkylaryloxy-alkylamidoethanesulfonates (m+nAr-T, m, n: carbon numbers; Ar: aromatic nucleus; T: taurine) with high purity were synthesized through bromization, esterification, Fries rearrangement, Pd-catalyzed hydrogenation, Williamson reaction, and acylation, et al, using carboxylic acid, phenol and taurine as starting materials. The structures and purities were characterized.

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The cyclization of carbodiimide 2 with substituted phenol in presence of solid potassium csrtjonaic was studied TiisX'iy. Tne resuYls show that It is a new mM method fOT preparing of 2-aryloxyimidazolones.

首次研究了碳二亞胺2與酚在堿催化條件下的成環(huán)反應(yīng)，結(jié)果表明這是一種溫和的制備2-芳氧基咪唑啉酮的新方法激情图片视频。

In this dissertation, I will represent my studies on the nitration of Chalcone derivatives, reaction of epoxide ketone, and the aromatization of 3,5-disubstitued 2-isoxazolines with nitric oxide.

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The main compositions of LPs include shorter chain carboxylic acid derivatives, furan derivatives, cyclopentanone, phenol derivatives, benzene derivatives, cinnamic acid derivatives, longer chain carboxylic esters and sterides.

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The cage effect of Gn potassium aqueous solution calculated by theα-cleavage photoreaction product distribution of substituted dibenzyl ketone was 14%, 18%, 22% and 42% for generations 1-4, respectively, which indicates that G4 takes a more close spherical shape with strong confine ability.

研究結(jié)果表明www.在线看黄，羧基為末端基團(tuán)的芳醚樹枝形聚合物Gn (n = 1-4)鉀鹽水溶液籠效應(yīng)隨代數(shù)增加而增大欧美人人妻人人操，從G1到G4，籠效應(yīng)分別為14%成年a大片免费视频、18%国产在线网站、22%和42%特黄特色黄片，樹枝形聚合物3代到4代從開放結(jié)構(gòu)變?yōu)榻跚蛐蔚姆忾]結(jié)構(gòu)的顯著變化使G4表現(xiàn)出明顯高于其他三代的籠效應(yīng)。