环烷

The biomimetic monooxygenation of cyclohexane with some substituted iodosobenzene and iodosobenzene derivatives catalyzed by 5,10,15,20-tetraphenylporphinatoiron chloride was studied.

在氯合5，10，15，20-四苯基卟吩合铁催化下，带有不同取代基的亚碘酰苯和亚碘酰苯的衍生物作充氧化剂对环己烷进行了仿生单充氧化反应的研究。

The synthesis of a novel rotaxane containing α-CD(α-cyclodextrin) as the macrocycle,stilbene as the 'string' and the isophthalic acid as stopper via a palladium-catalyzed Suzuki coupling reaction in water at room temperature and supramolecular self-assembly was reported.

通过醋酸钯催化的Suzuki偶联反应，在室温下于水溶液中通过超分子自组装制备了以α-CD为大环，异酞酸为端塞，二苯乙烯衍生物为链的新型超分子轮烷。

The quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78～110 ℃,and the reaction time was 45 min. The test results have shown thatH_4SiW_(12-O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.

实验表明：H4SiW12O40/MCM-48是合成丁酮-1，2-丙二醇缩酮的良好催化剂，在n∶n(1，2-丙二醇)=1∶1.6，催化剂用量为反应物料总质量的0.6%，环己烷为带水剂，反应时间45 min的优化条件下，丁酮-1，2-丙二醇缩酮的收率可达91.9%。

The starch-cyclodextrin microspheres were prepared by using starch/β-cyclodextrin as raw material, normal hexane as dispersed phase, Span60 and Tween60 as emulsifying, pentanol as assistant of emulsifying, and metaphosphoric acid trisodium salt as linking agent.

纳米微球以可溶性淀粉和β-环糊精为原料，选用正己烷为油相，Span60和Tween60为乳化剂，正戊醇为助乳化剂，三偏磷酸钠为交联剂，以对亚甲基蓝的去除率为指标进行了单因素和正交试验。

Bis-imidazoline was prepared from triethylene tetraamine and N,N-dimethylformamide dimethyl acetal at 85℃ for 2 h with toluene as solvent, with a yield of 90.4%. The reaction of bis-imidazoline with 1,2-dibromoethane and potassium carbonate in acetonitrile provided with a monobromide salt yield of 78.7%. Hydrolysis of monobromide salt under aqueous causic solution formed 1,4,7,10-tetraazzcyclododecane in a 74.2% yield.

用甲苯作溶剂，使三乙烯四胺和N，N-二甲基甲酰胺二甲基缩醛在85℃反应2 h，得到中间体双咪唑啉，产率90.4%，在乙腈溶剂中，碳酸钾存在下，双咪唑啉和1，2-二溴乙烷进行扩环反应，得到环状中间体一溴盐，产率78.7%，一溴盐经碱性水解2 h，得到1，4，7，10-四氮杂十二烷，产率74.2%。

Two cyclohexanes were first reported in Murraya.

主要成分3，4-二乙烯基-3-甲基环己烷在本属其它种未见报道。

The present doctoral dissertation was carried out to study the chemical constituents isolated from stems of two medicinal schisandraceous plants.34 compounds were isolated from the ethanol extracts of the stems S.henryi collected in the Jiangxi province by various column chromatographies.27 of them were identified on the basis of spectral analysis.There are 18 lignans,(including 5 dibenzocyclooctadienes,6 aryltetralins,2 tetrahydrofurans,3 diarylbutanes,2 other lignans),3 flavanols,2 glyceroesters,1 naphthoquinone,1 xanthine and 2 steroids,of which 6 compounds were new compounds,and 7 compounds were isolated from this family for the first time.

采用多种色谱技术进行分离纯化，从翼梗五味子藤茎的乙醇提取物中分离到34个化合物，综合运用现代波谱学技术鉴定了27个化合物，包括木脂素类化合物18个(其中联苯环辛烯类木脂素5个，芳基四氢萘类木脂素6个，四氢呋喃类木脂素2个，二芳基丁烷类3个，其他类型木脂素2个)，黄烷醇类化合物3个，甘油酯类化合物2个，萘醌类化合物1个，黄嘌呤类化合物1个，甾体类化合物2个，其中，5个为新化合物，7个为本科首次报道。

HC-402-2 Homogeneous catalyst for benzene hydrogenation is improved through removing water from the catalyst and reducing the content of emulsified material in nickelous isooctanoic acid cyclohexane liquor.

HC - 40 2 - 2型苯加氢均相催化剂经过改进，去除催化剂中的水份，降低异辛酸镍环己烷溶液中乳化物含量后，在保持加氢效果不变的前提下，大幅度提高了催化剂的抗水性能、延长了催化剂的使用寿命。

Thus, in order to attain acetal can be used as precursor of its matrix olefine aldehyde, 2-undecental glycol acetal was synthesized, and the corresponding optimum reaction conditions as: 2-undecental 0.2mol, glycol 0.3mol, cyclohexane as solvent, catalysed by vitamin C, the optium reaction time was 6h, its reaction yield could reach over 77.25%.

为了进一步探求效果更理想的前体化合物，本文继续合成了2-十一烯醛乙二醇缩醛，通过单因素优化实验得到最佳反应条件为：环己烷作溶剂，VC作催化剂，用量0.42%，醛醇物质的量之比0.2：0.3，反应时间6h，此条件下产品收率达77.25%。

Which is considered to be a key organoleptic constituent of Yellow Passion Fruit.

甲基-4-丙基 1，3-氧硫环己烷(Fema：3578)的香气，哪一个被认为是黄热带水果的主

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失