?carbonyl

carbonyl發(fā)音

英：['kɑ:b?n?l]　　美：['kɑ:b?n?l]

英：　　美：

carbonyl中文意思翻譯

n. 羰基, 金屬羰基合物

adj. 含羰基的

carbonyl詞形變化

形容詞: carbonylic |

carbonyl常見(jiàn)例句

1 、Pollution Survey of Carbonyl Compounds in Train Air───列車(chē)車(chē)廂內醛酮化合物的污染狀況

2 、At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising.───與此同時(shí)，醛、酮、酯類(lèi)羰基、芳香酮、醛類(lèi)羰基等類(lèi)含氧基團或者從無(wú)到有，或者官能團數量不斷增加。

3 、The mechanisms of protein oxidation were discussed from three aspects, modification of amino acid residue side chains, generation of carbonyl derivatives and formation of protein polymers.───從氨基酸殘基側鏈的改變、羰基衍生物的生成以及蛋白質(zhì)聚合物形成等三方面討論了乳蛋白氧化的可能機理。

4 、A method for economizing the 2,4-Dinitrophenylhydrazine colorimetry of protein carbonyl group was discussed.───對測定蛋白質(zhì)羰基含量的方法2,4-二硝基苯肼比色法進(jìn)行改良,使這一方法更適用于保健食品的功能檢測。

5 、Keywords: crystal structure, dichlorocarbene, carbonyl ylide,───關(guān)鍵詞:羰基葉立德,二氯卡賓,晶體結構

6 、To our knowledge, however, it has never been used for reductive amination of carbonyl compounds, nor for reduction of pre-formed imines.───可是據我們所知，它還從來(lái)沒(méi)有被用于羰基的還原氨化和用于一個(gè)已制亞胺的還原。

7 、PVPP has good appetency,It can remove the polyphenol efficiency through absorbing on surface by combination between the hydroxyl and carbonyl ?───PVPP通過(guò)酚羥基和羰基之間的氫鍵結合,進(jìn)行表面吸附,有效地去除多酚。

8 、cyclopropane carbonyl coloride───環(huán)丙甲酰氯

9 、mechanism of nucleophilic addition to carbonyl group───[化] 羰基親核加成反應機理

10 、After the starch was oxided,carboxyl and carbonyl group can be obtained.The parameters and application of oxidized starch were also introduced.───淀粉氧化后,得到羧基和羰基,描述了氧化淀粉表征參數及其在各行業(yè)中的應用。

11 、Chlorotyrosine was not eleated in patients with high MPO or carbonyl leels.───MPO或蛋白質(zhì)羰基升高的病人3-氯酪氨酸并不升高。

12 、A Study of Oper Ring Carbonyl Compounds'Dominative Conformation───開(kāi)鏈羰基化合物優(yōu)勢構象的研究

13 、This dissertation studied allylation reactions of carbonyl compounds promoted by inorganic salts or carbon dioxide in aqueous media.───本論文主要研究了水相中無(wú)機鹽和二氧化碳促進(jìn)羰基化合物烯丙基化反應。

14 、carbonyl sulfide hydrolysis catalyst───COS水解催化劑

15 、Keywords Heteronuclear;Carbonyl cluster;Iron;Palladium;───異核;羧基簇合物;鐵;鈀;

16 、The existence of carbonyl group in structure seems to be a factor that fayors the formation of quasi-molecular ion (QMI) or other adduct molecular ion (OAMI) in positive mode.───化合物結構中羰基的存在似有利于化合物在正離子模式下形成凖分子離子或其他分子加和離子。

17 、Abstract: Changes of group-component, functional groups of carbonyl and sulfoxide and molecular weight distribution of Shengli 100B and South Korea 70 asphalts af ter ageing were investigated by IR spectra and gel permeation chromatograph.───文摘:利用紅外光譜和凝膠色譜等技術(shù)考察了勝利100B和韓國70兩種道路瀝青熱老化后族組成、羰基與亞砜官能團以及相對分子質(zhì)量分布的變化。

18 、tristriphenylphosphine rhodium carbonyl hydride───[化] 氫化三羰基銠; 氫化三三苯基膦羰基銠

19 、The new fluorescent band is considered to be related to the intramolecular charge transfer between the amino group and the quinonoid carbonyl group.4.───我們認為該新的熒光峰與胺基和醌羰基之間的分子內電子轉移有關(guān)。

20 、Keywords cyclopentadienyl;indenyl;RuRu bond;carbonyl complexes;───環(huán)戊二烯基;茚基;釕-釕鍵;羰基化合物;

21 、Bimolecular elimination with formation of a carbonyl group;───雙分子羰基形成消除;

22 、The structure of p-coumaric acid and coniferyl aldehyde were founded both in residual lignin and in dissolved lignin, so resudial lignin and dissoled lignin both contained carbonyl.───殘余木素和溶出木素中都發(fā)現存在對香豆酸和松柏醛結構，導致殘余木素和溶出木素都中含有羰基；

23 、Progress in Triosmium Carbonyl Clusters───三鋨羰基簇合物的研究進(jìn)展

24 、In this complex, the hydroxonium ion H3O+ is bound partly to three carbonyl oxygen atoms by strong hydrogen bonds and partly to three alternate phenoxy oxygens by somewhat weaker hydrogen bonds.───在這萃合物中，水合氫離子H3O+部分是通過(guò)強氫鍵作用與3個(gè)羰基氧原子絡(luò )合，部分是通過(guò)稍弱于氫健的鍵與苯氧基中3個(gè)交替的氧絡(luò )合。

25 、The hydrogenation of CO over SiO2-supported rhodium carbonyl cluster catalysts and the effect of Mn, Li on the reaction were studied with IR,XPS,ESR,pulse reaction technique and activity measurement .───本文報導Rh_4(CO)_(12)/SiO_2催化劑的CO加氫反應及錳,鋰的助劑作用。

26 、The results implied that carbonyl stress may be one of the key factors in blood stasis and provided important theoretical and experimental foundation in anti-stresses as well as anti-aging.───揭示了羰基應激可能是血瘀證的關(guān)鍵生化原因之一，為抗應激、抗衰老提供了理論和實(shí)驗的重要依據。

27 、In the other type of monosaccharide, the carbonyl function is a ketone group. These sugars are termed ketoses.───在另一種類(lèi)型中,羰基的功能是作為酮類(lèi),這些糖被稱(chēng)為酮糖。

28 、The aliphatic aldehydes were more abundant than aromatic and branch-chain aldehydes since whenever either cooking oil or food can produce a lot of carbonyl compounds when heated.───從分布上來(lái)看，直鏈的羰基化合物的濃度遠遠高于支鏈和環(huán)狀的羰基化合物的濃度。因為無(wú)論是烹調油或者食物加熱時(shí)都可以產(chǎn)生大量的羰基化合物。

29 、Concentration ratios of formaldehyde/acetaldehyde and acetaldehyde/propionaldehyde showed that anthropogenic sources were the main sources of carbonyl compounds in the atmosphere of Guangzhou.───甲醛／乙醛、乙醛／丙醛質(zhì)量濃度比值顯示廣州大氣中羰基化合物主要與人為來(lái)源有關(guān)。

30 、Milk, especially fermented milk, has many kinds of flavor substances, which includes non-volatile acid, volatile acid, carbonyl compounds and hydrolyzates of protein, fat, and lactose.───摘要乳尤其是發(fā)酵乳中的風(fēng)味物質(zhì)種類(lèi)繁多，包括非揮發(fā)性酸、揮發(fā)酸、羰基化合物以及蛋白、脂肪和乳糖等的分解物。

31 、Milk,especially fermented milk, has many kinds of flavor substances, which includes non-volatile acid, volatile acid, carbonyl compounds and hydrolyzates of protein, fat, and lactose.───乳尤其是發(fā)酵乳中的風(fēng)味物質(zhì)種類(lèi)繁多,包括非揮發(fā)性酸、揮發(fā)酸、羰基化合物以及蛋白、脂肪和乳糖等的分解物。

32 、Photochemical production of carbonyl sulfide in precipitation───在降水中的羰基硫化物的光化學(xué)產(chǎn)物

33 、Keywords spearmint oil;refine : carvone;carbonyl group number;───留蘭香油;精制;香芹酮;羰基值;

34 、During the storage of rice wine,the amidogen or carbonyl reactions occur slowly,which makes the rice wine with darker color,strengthened flavor and mellow taste.───同時(shí)隨著(zhù)貯存期延長(cháng)酒中緩慢產(chǎn)生氨基、羰基反應使產(chǎn)品的色澤增深、香氣增濃、口味醇和綿軟、協(xié)調爽適。

35 、Keywords subergorgic;sesquiterpenoid;migration of carbonyl group;───倍半萜;柳珊瑚酸;羰基位移;

36 、Keywords active metal;reduction;carbonyl compound;halohydrocarbon;───活性金屬;還原;羰基化合物;鹵代烴;

37 、Phosgene, or carbonyl chloride, is an extremely toxic gas, and it was used for that purpose during World War I.───光氣，又名氯代甲酰氯，是一種巨毒氣體，在第一次世界大戰中作為毒氣使用。

38 、The carbonylation of benzyl chloride to phenylacetic acid catalyzed by carbonyl cobalt is discussed in great detail.───在此基礎上對羰基鈷在催化羰化反應領(lǐng)域的應用作了展望。

39 、The change of sodium ferric EDTA and carbonyl iron was not great, but most of ferric sulfate and ferric ammonium citrate became insoluble during storage.───乙二胺四乙酸鐵鈉和元素羰基鐵粉在貯藏過(guò)程中變化不大,而硫酸亞鐵和檸檬酸鐵銨在貯藏過(guò)程中絕大部分變成了不溶性鐵。

40 、TThis paper introduces the newest research achievements about palladium catalytic organic matter (alkyne, acyl amine, etc. ) and carbonyl link action.───介紹了鈀在催化有機物(炔烴、酰胺等),羰基化反應的最新研究成果。

41 、2- [ (1-hydroxy-2-naphthyl) carbonyl ] benzoic acid───2-[（1-羥基-2-萘基）羰基]苯甲酸

42 、Keywords triosmium carbonyl clusters;ligand's fluxional behaviour;───三鋨羰基簇合物;配體的移動(dòng);

43 、The compound reinforcer agent YDS can activate swift the carbonyl groups of furfural and acetone molecules.The product solidifica with epoxy resin.───YDS復合增強劑能迅速活化糠醛、丙酮分子中的碳基,其活化產(chǎn)物能參與環(huán)氧樹(shù)脂的固化反應。

44 、NADPH-dependent carbonyl reductase───NADPH-依賴(lài)碳酰還原酶

45 、The hydroxyl and carboxyl,belonging to auxochromic groups,were oxidized into the carbonyl and ester groups.───[方法]通過(guò)對刺槐木材變色前后丙酮抽出物的定性分析,得出變色前后丙酮抽出物的主要成分,進(jìn)行對比分析,初步得出抽出物對誘發(fā)變色的作用。

46 、The carbonyl groups ofketone、aldehyde and ester were generated during photooxidation. 3.───光氧化反應使得試樣中有酮、醛、酯等多種類(lèi)型的羰基生成。

47 、This paper discusses the current polarographic research of carbonyl compound in proton & proton inert solvent.───本文綜述了羰基化合物在質(zhì)子和質(zhì)子惰性溶劑中的極譜研究現狀。

48 、medium-pressure carbonyl process───中壓羰基法

49 、There is a rise in the content of both free amino acids in the crumb and volatile carbonyl compounds in the crust when proteinase is used.───當使用蛋白酶時(shí),面包屑中的游離氨基酸與面包皮中的揮發(fā)性羰基化合物的含量都會(huì )有所增加。

50 、Keywords hydrogen bond;carbonyl compounds;carboxyl;───氫鍵;羰基化合物;羧基;

51 、Cyclopropane carbonyl chloride is an important intermediate.───環(huán)丙甲酰氯是一種重要的中間體。

52 、It is a somewhat well known fact that sodium bisulfite will add to the carbonyl group of a ketone to form a crystalline addition product.───人們已經(jīng)知道，亞硫酸氫鈉可以加成到酮的羰基基團形成一個(gè)晶體加成產(chǎn)物。

53 、NADPH-dependent carbonyl reduc-tase───NADPH依賴(lài)碳酰還原酶

54 、The addition of aminoguanidine in beer could decrease the concentration of carbonyl compounds such as 5-HMF, diacetyl and pentanedione.───啤酒中添加氨基胍能明顯降低5-羥甲基糠醛、雙**、2,3-戊二酮等羰基化合物的含量,提高啤酒的風(fēng)味穩定性。

55 、α,β-unsaturated carbonyl group───α,β-不飽和羰基結構

56 、The relationship between the additive power of carbonyl compounds and their structures are discussed.───在此反應中表現出羰基的結構對反應活性的影響。

57 、The optimum using amount of CuI,a molar ratio of CuI to Grignard reagent is 25%. A new reaction mechanism is proposed to addition of allyl Grignard reagent with carbonyl compounds in the presence of CuI.───CuI的最佳用量是它與格氏試劑的摩爾比為25%，并且根據實(shí)驗結果提出了相應的反應機理。

58 、Keywords oil;carbonyl compounds;butanol;wavelength;───油脂;羰基值;正丁醇;波長(cháng);

59 、The frequency shift of carbonyl stretching bands has been found to be sensitive to the change of molecular conformation,inter and intramolecular interactions.───在紅外光譜中羰基伸縮振動(dòng)的變化可以看作是液晶分子相態(tài)轉變的標志。

60 、This method represents a useful conversion of the carbonyl group to the amino group.───它成為一個(gè)使羰基變?yōu)榘被挠行Х椒ā?/p>

61 、The lower molecular weight volatile carbonyl compounds are of interest because of their influence on flavor.───低分子量揮發(fā)性羰基化合物,因為它們對風(fēng)味的影響而有益。

62 、β-unsaturated carbonyl steroid───β-不飽和羰基甾體

63 、At the same time, the cellulose matrix is dehydrated to produce carbonyl group and conjugated olefinic bond, and then transfers into aromatic rings and graphite-like micro-crystal gradually.───同時(shí)纖維素基體脫水生成羰基和共軛雙鍵，之后不斷芳構化堆疊成為類(lèi)石墨微晶。

64 、The most important chemistry of dithianes, however, lies in their ability to act as a masked carbonyl group.───然而二硫雜環(huán)已烷的最重要的性質(zhì)是它作為一個(gè)被掩蔽的羰基。

65 、The aroma constituents of Fen-flavour Xiaoqu liquor are mainly esters and higher alcohols, and then organic acids and carbonyl compounds.───清香型小曲酒的香味組分以酯類(lèi)和醇類(lèi)為主,其次是有機酸類(lèi)和羰基化合物。

66 、When the prevailing wind direction is west wind, ozone has seasonal variation tendency at this moment, it is also roughly the same with H2O2 and Carbonyl.───當盛行風(fēng)向為西風(fēng)系時(shí)，此時(shí)臭氧濃度以夏季觀(guān)測濃度較高，秋、冬季較低，春季則又呈現上升趨勢，與本研究所量測H2O2與醛酮濃度變化亦大致相同。

67 、On heating, condensation reaction of the hydroxymethyl groups in the complexes takes place and forms methylenes or carbonyl groups.───固化過(guò)程中有小分子放出使配合物快速失重;

68 、The method of pyrolysis of carbonyl with introducing magnetic field can produce polycrystalline iron fiber with controllable geometry size.───多晶鐵纖維是一類(lèi)新型磁性材料,應用十分廣泛。

69 、To study various deleterious alterations of malondialdehyde (MDA) on erythrocytes and the inhibitive effect of glutathione (GSH) on the MDA-related carbonyl stress.───摘要探索丙二醛(MDA)對紅細胞的羰基毒化過(guò)程，以及谷胱甘肽(GSH)的拮抗作用。

70 、The various methods for the umpolung of carbonyl compounds (aldehydes and ketones), secondary amines and the most frequently used umpolung reagents are introduced.───先介紹了羰基化合物(醛、酮)的極性轉換的各種方法,然后談到胺的極性轉換方法和最常用的極性轉換試劑。

71 、Increase in reaction temperature results in increase in intrinsic viscosity of PET decrease in carbonyl content and narrowing of molecularwe...───提高反應溫度則使PET的特性粘度提高，羧基含量減少，分子量分布變窄，從而改善廠(chǎng)PET的內在質(zhì)量。

72 、Abstract: Recent advances in asymmetric hydrosilylation of prochiral carbonyl compounds catalyzed by chiral transition metal complexes are reviewed in this paper with 47 references.───文摘:評述了近年來(lái)手性金屬配合物催化的前手性羰基化合物的不對稱(chēng)硅氫化反應研究進(jìn)展。

73 、Keywords Halocarbene;Carbonyl Ylide;Deoxygenation;───鹵代卡賓;羰基葉立德;脫氧;

74 、Reactions of Carbonyl Compounds with the Carbonyl Group as an Electrophile with H, C, N and O Nucleophiles.───作為親電基的碳基與作為親核基的H,C,N和O的羰基化合物反應。

75 、It were introduced that some Addition reaction of carbonyl compounds with allylic metallorganic compounds,and it were discussed by reaction mechanism.───介紹了某些烯丙型金屬有機化合物與羰基化合物的加成反應,并通過(guò)反應歷程予以說(shuō)明.

76 、Keywords chiral cluster;sulfido;carbonyl;tetrahedral framework;───手征性簇合物;硫基;羰基;四面體結構;

77 、The existence of carbonyl group in structure seems to be a factor that favors the formation of quasi-molecular ion (QMI) or other adduct molecular ion (OAMI) in positive mode.───化合物結構中羰基的存在似有利于化合物在正離子模式下形成準分子離子或其它分子加和離子。

78 、The polarity of solvent disfavored the produce of triplet carbonyl compounds, restraining the CIDNP polarizations.───此外，強極性溶劑CD3CN不利于羰基化合物三線(xiàn)態(tài)的產(chǎn)生，因此從一定程度上抑制了CIDNP極化信號的產(chǎn)生。

79 、Micron nickel carbonyl powder───GB/T7160-1987微米級?mèng)驶嚪?/p>

80 、In hydrothermal solution, gold is activated and migrates in the form of hydride, carbonyl compound, nanometer particle, and nanometer alloy.───在熱液中金呈金氫化物、金羰基化合物及納米金粒子、納米金合金粒子活化遷移。

什么是異頭碳

異頭碳原子

單糖由直鏈變成環(huán)狀結構時(shí)，羰基碳原子成為新的手性中心，導致C1差向異構化，產(chǎn)生兩個(gè)非對映異構體。在環(huán)狀結構中，半縮醛碳原子稱(chēng)為異頭碳原子。

下圖為D-Glucose環(huán)化所形成的兩種異頭物，新生羥基（圖中紅藍色）與平面CH2OH異側為α-，同側為β-。異頭碳原子即在圖中藍線(xiàn)上。

什么是異頭碳

異頭碳（anomeric carbon）：

一個(gè)環(huán)化單糖的氧化數最高的碳原子。異頭碳具有一個(gè)羰基的化學(xué)反應性。

異頭物是指在羰基(carbonyl)碳原子上的構型彼此不同的單糖同分異構體形式。D-glucose的α-和β-型即是一對異頭物.它們是非對映異構體.

研究表明，D-葡萄糖存在著(zhù)兩種類(lèi)型，每一種都含有5個(gè)（而不是通常的4個(gè)）不對稱(chēng)碳。這個(gè)額外的不對稱(chēng)碳來(lái)自分子內的環(huán)化反應，這兩個(gè)新的立體異構體稱(chēng)為異頭物（anomers）。

當醇與醛反應形成半縮醛，或醇與酮反應形成半縮酮時(shí)，由羰基的非手性的sp2-雜化碳原子形成一個(gè)sp3-雜化碳原子。

在溶液中，含有5個(gè)或更多碳原子的醛糖和含有6個(gè)或更多碳原子的酮糖的羰基都可以與分子內的一個(gè)羥基反應，形成環(huán)式半縮醛。環(huán)式半縮醛可以是5員環(huán)或6員環(huán)結構，環(huán)結構中的一員是氧，它來(lái)自形成半縮醛的羥基，所以半縮醛是個(gè)雜環(huán)結構。由于6員和5員半縮醛雜環(huán)結構分別與吡喃和呋喃相似，所以形成6員雜環(huán)半縮醛的單糖被稱(chēng)為吡喃糖（pyranose），而5員雜環(huán)半縮醛單糖被稱(chēng)為呋喃糖（furanose）。環(huán)化單糖中氧化數最高的碳稱(chēng)為異頭碳（anomeric carbon）。在環(huán)式結構中，異頭碳是手性碳，環(huán)化的醛糖或酮糖可以呈現兩種異頭構型中的一種，即a-或b-構型）。