ketones 中文意思是什麼

ketones 解釋
酮；酮類
  1. The reaction of sulfate with aldehydes and ketones has been known for many years.

    大家知道硫酸鹽能與醛類和酮類反應已有許多年了。
  2. An enantioselective borane reduction of prochiral ketones directly catalyzed by

    直接應用非修飾的簡單氨基醇和氨基酸
  3. Enantioselective borane reduction of prochiral ketones catalyzed by s - indolin - 2 - yl methanol or - indoline - 2 - carboxylic acid enantioselective borane reduction of prochiral ketones catalyzed by

    硼烷體系中吲哚醇或吲哚酸催化的前手性酮的不對稱還原
  4. Ind oline - 2 - carboxylic acid ; ketones

    -吲哚酸酮
  5. Abstract : several - aromaticamino ketones, which were designed according to some hypothetical models of the cyclooxygenase and 5 - lipoxygenase active sites, were synthesized by an amino exchange reaction. the structures of the eight new compounds were confirmed by ir, 1h - nmr and elemental analysis. the results of the pharmacological tests showed some of the investigated compounds had significant anti - inflammatory activity on croton oil - induced ear edema of mice

    文摘:根據環氧化酶、 5 -脂氧化酶活性中心結構模型設計了一組-芳胺酮類化合物，並用胺交換反應合成了這些化合物.經紅外光譜、核磁共振氫譜及元素分析證實了8個未見文獻報道的化合物的結構.藥理實驗結果顯示.部分受試化合物在巴豆油誘發小鼠足趾腫脹模型中表現出一定的抗炎活性
  6. Cyanohydrins are biologically active compounds used in synthesis of - amino alcohols, - hydroxy ketones and - hydroxy acids, which have importance as fine chemicals, pharmaceuticals and agrochemicals

    氰醇是合成-氰基醇類， -羥基酮類及酸類化合物的重要生物活性物質，這些化合物又是精細化工、制藥和農用化學品領域的重要原料和中間體。
  7. Ketones are found in unusual amounts in the urine of diabetics and people suffering from faulty fat metabolism.

    糖尿病患者的尿中丙酮量出現異常，並且患者脂肪代謝出現故障。
  8. It is produced by the reduction of fuchsin by sulfurous acid, and is oxidized by aldehydes and ketones, restoring the magenta color of the fuchsin

    配法是用亞硫酸使品紅溶液還原，若有醛酮類存在時便使之氧化而重新呈現品紅本身的洋紅色。
  9. Ketones are named by the iupac system as derivatives of the class name for this homologous series, " alkanones.

    在iupac系統中，酮是作為這個系列的類名? ? 「烷屬酮」的衍生物來命名的。
  10. Studies on the synthesis of imide - functionalized, - unsaturated ketones and their cycloaddition reaction

    不飽和酮的合成及與二烯烴環加成反應的研究
  11. Ketones are named by the iupac system as derivatives of the class name for this homologous series, "alkanones. "

    在IUPAC系統中，酮是作為這個系列的類名「烷屬酮」的衍生物來命名的。
  12. Synthesis of pentaerythritol diacetals from aldehydes and ketones under microwave irradiation

    催化下微波促進芳香醛與環酮的縮合反應
  13. By using sterically hindered, electron - rich alkylphosphines and n - heterocyclic carbenes ( nhc ), this process has encompassed a broad range of substrates including ketones, aldehydes, esters, amides, malonates, nitrocompounds, nitriles and sulfones

    隨著大位阻、富電子烷基膦和氮雜環卡賓（ nhc ）為配體的催化體系的出現，該類反應的底物已從酮擴展到醛、酯、酰胺以及含酸性氫的化合物如丙二酸酯、硝基化合物、腈、碸等。
  14. Epoxidation of arylzinc species formed in situ from diethylzinc and a series of arylboronic acids with, - unsaturated ketones was investigated

    乙基鋅和芳基硼酸原位制備的芳基鋅與， -不飽和酮進行環氧化反應。
  15. The asymmetry reduction of ketones has become frontier field of organic synthesis chemistry, and it ' s also the fast developing and more successful field in recent years

    近年來，由酮類化合物不對稱還原為醇類化合物成為有機合成化學的前沿領域，發展迅速，並取得了許多成就。
  16. The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  17. Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    文摘:縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  18. The pentaerythritol diacetals were effectively synthesized through condensation reaction of pentaerythritol with aldehydes and ketones promoted by zirconium sulfate - silica gel under microwave irradiation

    摘要微波輻射硫酸鋯矽膠催化季戊四醇與醛、酮縮合反應，高收率制得了雙縮醛和雙縮酮化合物。
  19. Essential oils, perfumery isolates and synthetics for export. determination of aldehydes and ketones. hydroxylamine method

    出口芳香油單離和合成香料醛和酮的測定.羥胺法
  20. Essential oils, perfumery isolates and synthetics for export. determination of aldehydes and ketones. neutral sulfite method

    出口芳香油單離和合成香料醛和酮的測定.中性亞硫酸鈉法
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