叔醇
- 网络tertiary alcohol;nerolidol;secondary alcohol
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研究了反应条件,位阻大小对产率的影响,并着重探索了三环大位阻高级叔醇&柏木醇的酯化方法及影响其合成的的因素。
Special effort has been made to study the esterification method of cedrol which is a highly sterically hindered tri-cyclic tertiary alcohol and the factors which affect their synthesis .
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醇结构对MIECC有影响,在反应初速率及平衡产率方面均遵循伯醇>仲醇>叔醇的规律。
The structure of amyl alcohol affects both the initial reaction rate and the ultimate yield of amyl n caprylate in the following sequence : primary alcohol > secondary alcohol > tertiary alcohol .
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首先,建立了HPLC测定香丹注射液中指标成分香草醛和橙花叔醇的分析方法,结果表明该方法具有良好的准确性和可重复性,加样回收率符合要求。
An HPLC assay was developed and validated for the analysis of vanillin and nerolidol and the results showed that the assay exhibited excellent specificity , repeatability and reproducibility .
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弱碱作用下从叔醇简便地合成烯烃本文采用酰化法和DCC法合成了一系列叔醇酯。
Convenient Synthesis of Olefins from Tertiary Alcohols under Mild Basic Condition A series of esters of tertiary alcohols have been effectively synthesized by acylation and the DCC methods .
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橙花叔醇植物资源及利用的研究
Study on the plant resources of nerolidol and their uses
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大位阻叔醇酯化合成的研究
Studies in Esterification of Sterically Hindered Tertiary Alcohols
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一些新叔醇化合物的合成
Synthesis of New Tert-Alcohols
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主要成分为α-蒎烯,β-蒎烯,β-顺式罗勒烯,茵陈炔及橙花叔醇。
Among them , the main compounds are α - pinene , β - pinene , sabinene , capillene and nerolidol .
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由橙花叔醇、香叶基衍生物和其它多种原料经不同的化学反应手段,可以合成金合欢醇。
Farnesol can be synthesized by different chemical means from different materials , such as , nerolidol , geranyl derivatives or other ( compounds ) .
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GB/T14457.8-1993单离及合成香料叔醇含量的测定氯乙酰-二甲基苯胺法三元乙丙绝热层中残留α,α-二甲基苯甲醇含量测定
Isolate and synthetic aroma chemicals & Determination of tertiary content by acetyl chloride-dimethyl aniline method Determination of α,α - dimethylbenzyl alcohol in EPDM insulation by gas chromatography
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一般而言,由于位阻的影响,伯醇最易酯化,相同时间转化率最高,仲醇次之,叔醇最差。
Generally speaking , primary alcohols were esterified most easily , and their conversions were the highest during the same time , followed by secondary alcohols , then tertiary alcohols due to the increase in the steric interaction .
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花香化功香化合物有吡嗪类、香叶醇、β紫罗酮十(顺)茉莉酮、苯乙腈、橙花叔醇、苯甲醇、芳樟醇氧化物、2苯乙醇等。
And the flowery and burn aroma components include Pyrazines , Geraniol , β- Ionone + ( z ) - jasmone , Benzyl cyanide , Nerolidol , benzyl alcohol , Linalool oxide , 2 - Phenyl ethanol , etc.
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富含异戊烯的C5馏分合成叔戊醇的研究
Preparation of tertiary amyl alcohol from iso amyl ene enriched c_5 fraction
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用苯和叔戊醇通过Friedel-Crafts烷基化反应制备叔戊基苯。
Tert amylbenzene has been prepared by benzene with amylene alcohol Friedel Crafts alkylation .
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以气相色谱-质谱联用法检测到MTBE降解主要中间代谢产物是叔丁基醇、异丙醇、丙酮。
The analysis of intermediate metabolites of MTBE degradation by GC-MS showed that tert-butyl alcohol , isopropanol and acetone were the main intermediate metabolites .
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在实验室研究了从富含异戊烯的C5馏分水合制备叔戊醇的工艺,考察了催化剂、反应温度、压力、空速、水与异戊烯摩尔比等因素对水合反应的影响。
Preparation of tertiary amyl alcohol from hydration of isoamylene enriched C 5 fraction was carried in the laboratory . The effects of catalyst , reaction temperature , pressure , space velocity and water / isoamylene ratio were investigated .
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实验结果表明,较好的合成条件为果糖与棕榈酸的摩尔比1∶2,叔戊醇占混合溶剂体积总量的40%,0.1g酶,4A型分子筛适量,反应温度60℃,摇床转速180r/min。
The experimental results showed that the optimal conditions were 40 % tert-amyl alcohol in mixed solvent , molar ratio of fructose to palmitic acid 1 ∶ 2 , some 4A molecular sieve , 60 ℃, rock bed rotate speed 180 r / min.
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叔戊醇体系酶促大豆油制备生物柴油
Lipase-catalyzed production of biodiesel from soybean oil in tert-amyl alcohol system
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叔戊醇/水两相体系脂肪酶催化合成蔗糖酯
Lipase Catalyzed Synthesis of Sucrose Ester in the Tert-amyl Alcohol / water two Phase System
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本文介绍了国内外叔炔醇的合成方法、生产及应用。
The principal synthetic methods , production and application about the tertiary acetylenic alcohols in domestic and abroad are introduced in this paper .
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叔炔醇是生产医药、农药、香料,合成材料的重要精细化学品。
Tertiary alkynols are important fine chemicals which have been widely used in producing pharmaceuticals , pesticides , perfumery materials , synthetic materials , and corrosion inhibiter etc.
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考察了叔戊醇、丁酮、叔戊醇与丁酮混合溶剂和果糖与棕榈酸摩尔比对产物浓度的影响。
The effects of solvent ( tert-amyl alcohol , butanone ), volume ratio of tert-amyl alcohol to butanone in mixed solvent and molar ratio of fructose to palmitic acid on fructose palmitate concentration were investigated .
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利用该固定化酶催化玉米油转酯反应生产生物柴油时,叔戊醇为适宜的反应介质,其最适添加量为0.5ml/g;
Subsequently , transesterification of corn oil to biodiesel catalyzed by the immobilized lipase was explored . Tert-amyl alcohol was found to be the most suitable reaction medium with a favorable amount of 0.5 ml / g.
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因此本文加入小分子物质封闭载体表面的多余基团,阻止其对固定化酶的迫害。丙氨酸、缬氨酸、色氨酸、叔戊醇等小分子都大大提高了固定化嗜热菌蛋白酶的热稳定性。
In this work , to enhance the thermal stability of immobilized enzyme , small molecule reagents such as alanine , valine , tryptophan , tert-amyl alcohol were used to quench and block excessive activated groups on support surface .
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双长链烷基甲基叔胺是脂肪醇和二甲胺催化胺化反应的主要副产物。
Dialkylmethylamines are the main by-products int he catalytic of fatty alcohols .
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研究了羊毛纤维在叔丁醇钾无水醇溶液中的改性问题。
The treatment of wool under anhydrous conditions with potassium tert-butoxide solu-tion is studied .