烯醇
- 与 烯醇 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
The relationship between glycosidic precursors and its aroma components was studied. The results showed: The dominant aroma constituents in aroma oil of jasmine tea include benzyl acetate, linalool, methyl antyranilate, cis-3-hexenyl benzoate, benzyl alcohol, indole, farnisene, methyl benzoate, methyl salicylate, geraniol, cis-3-hexenyl-acetate etc.; and the higher the concentration of these components is, the higher the quality of jasmine tea is.
结果表明:茉莉花茶香精油中,含量较高的有乙酸苄酯、芳樟醇、邻氨基苯甲酸甲酯、苯甲酸顺-3-己烯酯、苯甲醇、吲哚、法尼烯、苯甲酸甲酯、顺-3-己烯酯、水杨酸甲酯、橙花叔醇、乙酸顺-3-己烯酯、香叶醇;这些成分的含量随花茶品质的提高而增多;研究表明,花茶的高含量香气成分也是茉莉花中的主要赋香成分。
-
First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.
本文在氯化反应过程中,自行设计制作出了氯化管式反应器,在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯,根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件,二氯异丁烯的总收率达65%以上,选择性达80%;接着,对二氯异丁烯进行水解反应制得了2-甲烯-1,3-丙二醇,讨论了相关因素对水解反应的影响,并通过正交试验和单因素试验得到了较佳工艺条件,二氯异丁烯的转化率达100%;同时还对制备的2-甲烯-1,3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO,并对产品进行了鉴定,从而打通了整个工艺路线。
-
The results showed that the density of glandular trichome of mature leaves was lowest in lower leaves, the second in cutter leaves, and the highest was found in upper leaves.α-Duvatriene-4-ol,β-Duvatriene-4-ol,α-Duvatriene-4,6-diol and β-Duvatriene-4,6-diol were higher in cutter leaves than that in lower leaves by 282%, 240%, 48% and 80% respectively, while those in upper leaves were higher than that in lower leaves by 991%, 687%, 74% and 129%, respectively.
结果表明:不同部位成熟烟叶腺毛密度表现为下部<中部<上部;中部烟叶分泌物中的α-西柏三烯-4-醇、β-西柏三烯-4-醇、α-西柏三烯-4,6-二醇、β-西柏三烯-4,6-二醇的含量分别比下部烟叶增加了282%、240%、48%、80%,上部烟叶的上述四种分泌物的含量分别比下部烟叶增加了991%、687%、74%和129%。
-
Water,c12-20 acid peg-8 ester,octyldodecanol,cetearyl isononanoate,butylene glycol,biosaccaride gum-1,peg-40 hydrogenated caster oil,ethylhexyl menthoxycinnamate,phenoxyethanol,potassium cetyl phosphate,macadamia ternifolia seed oil,dimethicone,carbomer,propylene glycol,glyceryl stearate,cocoglycerides,butyrospermum parkii,c12-13 alkyl lactate,methylparaben,benzophenone-3,pentadecalactone,sorbic acid,citrus aurantium dulcis oil,sodium hydroxyde,tocopheryl acetate,disodium edta,iris germanica root extract,retinyl palmitate,equisetum arvense extract,butylparaben,peg-8,propylparaben,ethylparaben,sodium hyaluronate,chlorhexidine digluconate,citrus aurantium amaraoil,tocopherol,ascorbyl palmitate,citric acid,ascorbic acid,limonene,linalool
水,c12-20 acid peg-8 ester,辛基十二烷醇,鲸蜡硬脂醇异壬酸酯,丁烯二醇,多醣物质,PEG-40氢化蓖麻油,4-甲氧基肉桂酸-2-乙基己基酯,苯氧乙醇,十六烷基磷酸钾,澳洲胡桃子油,地美司康,卡波姆,丙烯乙二醇,甘油硬脂酸,椰油脂酸甘油酯类,牛油果,c12-13烷醇乳酸酯,对羟基苯甲酸甲酯,二苯甲酮-3 ,环十五内酯,山梨酸,甜橙油,氢氧化钠,维生素E醋酸酯,乙二胺四乙酸二钠,鸢尾花萃取,维他命A酯,问荆萃取,对羟基苯甲酸丁酯,聚乙二醇- 8,羟苯丙酯,羟苯乙酯,透明质酸钠,洗必泰葡萄糖酸盐,苦橙油,维生素E ,维生素C棕榈酸酯,柠檬酸,抗坏血酸,柠檬精油,沉香醇水:几乎所有护肤品成分第一位都是水。辛基十二烷醇:界面活性剂、乳化剂、稠化剂,有一定刺激性
-
Chemical ingredient of the product: Through the essential oil analysis by SRIFFI (short for " Shanghai Research lnstitute of Fragment & Flavor lndustry "), the main ingredient of Ledum palustre oil is as follows:β-pinene 、 p-cymene 、γ-terpineol 、 4-terpineol 、α-terpineol 、 sabinenol 、 nyrtenal 、 bornyl acetate 、 cuninal.
二、产品的化学成份:经上海香料研究所对杜香油的初步分析,发现该油中主要成份有:β-守烯、对-伞花烯、γ-松油醇、 4-松油醇、α-松油醇、桧醇、桃金娘烯醛、乙酸龙脑酯、格茗醛、γ-松油烯-7-醇、乙酸愈创木酯等成份。
-
The chapter two was focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis, firstly, a new synthesis of highly substituted cyclopentadienes from a,β-alkynone promoted by samarium diiodide was investigated and the highly substituted cyclopentadienes were prepared in moderate to good yields under mild conditions. Secondly, the Michael addition and Michael-aldol tandem reaction of diorganyl diselenides or diorganyl disulfides with α,β-alkynones mediated by samarium diiodide were studied and a series of alkenylsulfides and alkenylselenides were prepared in good yields. Then the highly regioselecfive nucleophilic addition of the allylsamarium bromide to α,β-alkynones were explored. We found that the allylsamarium bromide reacts with α,β-alkynones to afford regiospecificly 1. 2-nucleophilic addition products in good yields under mild condition. At last we studied the coupling reaction of aryl halides promoted by NiCl〓/PPh〓/Sm〓.
第二章 研究了二碘化钐、金属钐促进的有机反应:1、二碘化钐促进下α,β-炔基酮的偶联环化反应,提供了一种制备多取代环戊二烯的新方法;2、二碘化钐促进下的二硫醚、二硒醚与α,β-炔基酮的Michael加成反应,为高产率地制备多取代的烯基硫或烯基硒化合物提供了方便可靠的新方法;3、二碘化钐促进下的二硫醚、二硒醚与α,β-炔基酮和醛、酮的Michael—aldol串联反应,提供了一种一锅法高产率地制备多取代的含硫的烯丙基醇或含硒的烯丙基醇类化合物的方便可靠的原子经济性的新方法;4、烯丙基溴化钐与α,β-炔基酮的高度区域选择性的1,2-亲核加成反应;5、NiCl〓/PPh〓/Sm〓促进的卤代芳烃的偶联反应-一种从各种卤代芳烃制备联苯类化合物的有效方法。
-
Chapter 2 has analysized the conversly synthetic means of solanesol and designed novelly synthetic routes of solanesol and key intermediate Chapter 3 has summarized the preparation of trans-3-methyl-4-hydroxy (bromo-2-butenyl oxy methyl benzene In chapter 4 ,a novel technology of important intermediate(all trans-8-bromo geranyl acetate),which is suitable for industrial procedure , was found .meanwhile,an another new way has been invented ,of which the key intermediate (all trans-8-hydroxy geranyl acetate) has been produced.
第二部分分析了茄尼醇的逆合成方法,设计了一条适合于合成茄尼醇的合成路线及其重要中间体的合成路线。第三部分研究了重要中间体[Trans-3-甲基-4-羟基-2-丁烯基乙酰基(苄基,2,3-二氢吡喃基)醚]的合成新方法,找到了一条适合于工业化生产的制备反式-3-甲基-4-羟基-2-丁烯基苄基醚的新方法。第四部分研究了重要中间体[-3,7-二甲基-8-羟基-2,6-辛二烯-1-醇乙酸酯、-3,7-二甲基-8-溴-2,6-辛二烯-1-醇乙酸酯]的合成新方法,找到了一条适合于工业化生产的制备它们的新方法;同时研究了一条制备-3,7-二甲基-8-羟基-2,6-辛二烯-1-醇乙酸酯的另一新方法。
-
These compounds were identified as follows:chrysophanol (FP-1),physcion(FP-2),eriosematin(FP-3),scoparone(FP-4),lupeol(FP-5),betulinic acid(FP-6),3\',4\'-Dihydroxy-trans-cinamic acid octacosyl ester(FP-7),β-sitosterol (FP-8),flemiphilippinone A(FP-9),monopalmitin(FP-10),emodin(FP-11),islandicin (FP-12),salicylic acid(FP-13),p-methoxyphenylpropionic acid(FP-14),trideca-1, 3-diene(FP-15),lupinifolin(FP-16),flemichin D(FP-17),flemiphilippinin A(FP-18), auriculasin(FP-19),erythrinin B(FP-20),6-C-prenylluteolin(FP-21), 8-(1,1-dimethylallyl) genistein(FP-22),flemiphilippinin E(FP-23),flemiphilippinin F (FP-24),5,7,3\',4\'-tetrahydroxy-6,8-diprenylisoflavone(FP-25),flemiphilippinin D (FP-26),dorsmaninsⅠ(FP-27),osajin(FP-28),6,8-diprenyleriodictyol(FP-29), lupinalbin A(FP-30),genistein(FP-31),3\'-O-methylorobol(FP-32),orobol(FP-33), 5,7,2\',3\',4\'-pentahrdroxyflavone(FP-34),the mixture of biochanin A and prunetin (FP-35 and 36),genistin(FP-37),sophororicoside(FP-38),3\'-O-methylorobol-7-glucoside(FP-39),the mixture of sissotrin and prunetin 4\'-O-β-D-glucoside(FP-40 and 41),adenosine(FP-42) and luteoloside(FP-43,mixture).
这些化合物分别为大黄酚(FP-1)、大黄素甲醚(FP-2)、eriosematin(FP-3)、滨蒿内酯(FP-4)、羽扇豆醇(FP-5)、白桦酸(FP-6)、咖啡酸二十八烷酯(FP-7)、β-谷甾醇(FP-8)、蔓性千斤拔酮A(FP-9)、单棕榈酸甘油酯(FP-10)、大黄素(FP-11)、islandicin(FP-12)、水杨酸(FP-13)、对甲氧基苯丙酸(FP-14)、十三烷-1,4-二烯烃(FP-15)、lupinifolin(FP-16)、千斤拔素D(FP-17)、蔓性千斤拔素A(FP-18)、auriculasin(FP-19)、erythrinin B(FP-20)、6-C-异戊烯基木犀草素(FP-21)、8-(1,1-二甲烯丙基)-染料木黄酮(FP-22)、蔓性千斤拔素E(FP-23)、蔓性千斤拔素F(FP-24)、5,7,3′,4′-四羟基-6,8-双异戊烯基异黄酮(FP-25)、蔓性千斤拔素D(FP-26)、dorsmaninsⅠ(FP-27)、osajin(FP-28)、6,8-双异戊烯基圣草素(FP-29)、lupinalbin A(FP-30)、染料木黄酮(FP-31)、3\'-O-甲基香豌豆苷元(FP-32)、奥洛醇(FP-33)、5,7,2′,3′,4′-五羟基黄酮(FP-34)、鹰嘴豆素甲和樱黄素的混合物(FP-35和FP-36)、染料木苷(FP-37)、槐属苷(FP-38)、7-葡萄糖基-3\'-O-甲基香豌豆苷(FP-39)、印度黄檀苷和樱黄素4′-O-β-D-葡萄糖苷的混合物(FP-40和FP-41)、腺嘌呤核苷(FP-42)和木犀草苷(FP-43,混合物)。
-
In this paper, we studied the reaction mechanism ofpolyvinyl alcohol acetalizing conjugated olefine aldehyde and thepreparation of granule state of polyvinyl alcohol acetalizingconjugated olefine aldehyde in low temperature.
本文主要研究聚乙烯醇与共轭烯醛的缩醛化反应机理以及低温下颗粒态聚乙烯醇缩共轭烯醛的制备;淀粉与共轭烯醛的反应以及聚乙烯醇与淀粉共混相溶的性质,同时探讨了混合浆液缩共轭烯醛对粘度影响。
-
Results Eleven compounds were obtained and identified as sarcodonin A, scabronine B, 3β-hydroxy-5α, 8a-epidioxyergosta-6, 22-dien,(22E, 24R)-ergosta-7, 22-diene-3β, 5α, 6β-triol,(22E, 24R)-ergosta-7, 22-diene-3β-ol, benzoic acid, 4-hydroxylben-zaldehyde, 4-monopropanoylbenzenediol, ethy1-β-D-glucopyranoside, thioacetic anhydride,(2S, 2'R, 3S, 4R)-2-(2-hydroxyoctadecanoylamino) docosane-1, 3, 4-triol.
结果共分离鉴定了11个化合物,分别是:sarcodonin A、scabronine B、3β羟-5α,5α-过氧麦角甾-6,22-二烯-3β-醇、(22E,24R)-麦角甾-7,22-二烯-3β,5α,6β三醇、(22E,24R)-麦角甾-7,22-二烯-3β-醇、苯甲酸、对羟基苯甲醛、对羟基苯甲酸乙酯、乙基-β-D-吡喃葡萄糖苷、硫代乙酸酐、(25,2'R,3S,4R)-2-(2-羟基-十八碳酰胺)二十二碳烷-l,3,4-三醇。
- 推荐网络例句
-
I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
-
Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
-
Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。