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The addition of TMSCN and nitromethane to carbonyl compounds is the most direct, efficient, and prevailing strategy.

羰基化合物的不对称腈化反应和不对称Henry反应是制备光学活性氰醇和硝基醇直接而有效的方法之一。

The domestic demand of acetic acid up to 1,440,000-1,620,000 tons can be anticipated in 2010, if 60% is produced by methanol, 520,000 tons of methanol will be consumed;③Methanol can be used as feedstock to directly produce various pesticides ,such as fenitrothion, omethoate, dipterex etc., we anticipate that approximately 340,000 tons of methanol will be used to produce pesticides in 2010.④ Various medicines use methanol as feedstock, such as sulfanilamide, vitamin B6 etc., we anticipate that approximately 180,000 tons of methanol will be used to produce medicines in 2010.⑤ In the duration of dye production, methanol can be used as feedstock or solvent, such as s carlet base RC, disperse red GLZ, phthalocyanin ⑥ Synthetic resin also need methanol as feedstock such as organic glass, we anticipate that about 70,000 tons of methanol will be used to produce synthetic resin and plastics in 2010;⑦Synthetic fibers and synthetic rubber industry, will use methanol about 800,000 tons in 2010;⑧ At present, the production of MTBE is increase rapidly, there are 27 set of plants, total production capacity is 620,000 tons every year, and the demand is about 800,000 tons, there is gap between demand and supply.

预计2010年我国醋酸的需求量将达144~162万吨,按甲醇羰基法占60%计,将需求甲醇达52万吨;③多种农药的生产直接以甲醇为原料,如杀螟松、乐果、敌百虫等,预计到2010年甲醇用于生产农药约为34万吨;④多种医药药品以甲醇为原料,如长效磺胺、维生素B6等,预计到2010年甲醇用于医药约为18万吨;⑤染料生产过程中用甲醇作原料或溶剂,如红色基RC、分散红GLZ、阴率子GRL、酞菁素等等,预计2010年甲醇用量约为10万吨;⑥有机玻璃等合成树脂也需用甲醇为原料,预计到2010年甲醇用于生产合成树脂与塑料用量约为7万吨;⑦合成化纤与合成橡胶工业,2010年甲醇用量约为13万吨;⑧我国MTBE生产正处于快速增长期,现有MTBE装置27套,总生产能力62万吨/年,而年需求量约80万吨,有一定缺口。

Methyl 3,6,8-trihydroxy-7-methoxy-1-methylanthraquinone-2-carboxylate is a new COX-2 selective inhibitor isolated from Gladiolus gandavensis.

1-甲基-2-甲氧羰基-3, 6, 8-三羟基-7-甲氧基蒽醌是从唐菖蒲干球茎中分离到的具有环氧化酶-2选择性抑制活性的多取代蒽醌类化合物。

The influence of the position of amino associated with pyrimidine on the reaction yields was discussed.

以取代的氨基嘧啶为共试剂,与多种芳香族硝基化合物进行了硒催化的羰基化反应,产率最高可达90%左右。

Chapter 4 The unclassical products——1-substituted aryl-4-ethoxycarbonyl5-dimethylaminometheneamino-1, 2, 3-triazole were prepared under Vilsmier conditions, and the reaction mechanism was also studied.

第四章报道了在Vilsmier条件下非经典产物—1-取代芳基-4-乙氧羰基-5-二甲基氨基甲叉氨基-1,2,3-三唑的合成及反应的机理进行了讨论。

For the α-arylation of ethyl acetoacetate, the product was α-aryl ethyl acetoacetates, rather than ethyl a-arylacetates which are the major products in other catalytic systems.

较为惰性的氯代芳烃在Pd2/L1的催化下,也能够跟1,3-二羰基化合物发生α-芳基化反应。

A surface-initiated ring-opening polymerization approach was used to functionalize multiwalled carbon nanotubes with linear poly.

通过化学改性,在碳纳米管表面引入氨基,然后引发N~5-苄氧羰基赖氨酸的N~2-羧基-α-氨基酸酐单体的开环聚合,成功将聚赖氨酸接枝到碳纳米管表面。

The results indicated isoprene was soon consumed under the condition of excess ozone. During the reaction, the major carbonyl products formed were methyl vinyl ketone, methacrolein, methylglyoxal, and formaldehyde. Formic acid, CO and CO2 were also among the products.

在反应温度(294±2)K,压力为1.01×10^5Pa空气,O3过量的条件下,异戊二烯很快反应完全,反应中生成的羰基产物主要包括甲基丙烯醛、甲基乙烯基酮、丙酮醛和甲醛;产物中还包括甲酸、一氧化碳和二氧化碳。

The results show thatthe substitutions containing sulfur atom in the pyrazole ring remarkably affectthe steric and electronic properties of the pyrazole ligands.

因此,我们研究了吡唑环上带上S原子取代基对形成双吡唑烷配体及其与VIB金属羰基配合物的光化学反应的影响。

The chlorin e6 7 and chiorin 11 were oxidized further with osmium oxide in the same oxidization condition to yield bateriochlorin 8 and 12, respectively.

卟吩醛2在碱性条件下转化为卟吩e6三甲酯7,2与烷基溴化镁的格氏反应给出脱镁叶绿酸醇9,选择高钌酸四丙基铵和N-甲基吗啉N-氧化物将3-位羟基氧化成羰基,所生成的卟吩二酮10在酸性条件下脱去甲酸甲酯生成焦脱镁叶绿酸衍生物11,用四氧化锇对7和11实施氧化,则分别转化为细菌卟吩衍生物8和12。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

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