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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。
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The experimental results show that the distributions of content and toxicity equivalent quantity of PAHs in raw coal are similar to coal gasification but this compositions and contents are different. The rise of coal rank leads to the decrease of the content and TEQ of PAHs in raw coal and the increase of TEQ during coal gasification, while the content of PAHs emission from coal gasification increases first and then decreases with the increase of coal rank. The total PAHs contents generated in coal gasification of some sorts of coals are higher than in raw coal. The types of PAHs formed in coal gasification include undecomposed PAHs in raw coal, pyrosysthensis PAHs, and radical polymerization PAHs at high temperature.
试验结果表明:煤气化前后多环芳烃质量分数和毒性当量质量分数的分布特徵相似,但多环芳烃的组成和质量分数不同;煤化程度增加,原煤多环芳烃质量分数和毒性当量质量分数减小,煤气化多环芳烃质量分数先增后减,毒性当量质量分数与煤化程度呈线性关系;部分煤种气化多环芳烃的质量分数高於原煤多环芳烃质量分数,且煤气化多环芳烃的种类分为原煤未分解的多环芳烃、热解合成的多环芳烃、自由基高温缩合生成的多环芳烃。
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In this contribution novel acid-base sulfonated poly(phthalazinone ether nitrile ketone)s membranes are introduced.The membranes are composed of SPPENKs as the acidic compounds,and polyetherimide as the basic compounds,furthermore,redissolving SPPENKs and PEI in N-methylpyrrolidone then cast directly onto clean glass substrates in dust free environment at 60℃ aiming at enhancing membrane toughness and other relative properties.
以合成的一系列不同磺化度的碘化聚芳醚腈酮为acidic聚合物,以聚芳醚酰亚胺为basic聚合物,并将其溶解在 N -甲基-2-吡咯烷酮中配成质量分数为10%的成膜液,60℃下刮制成膜,制得acid-base型磺化聚芳醚腈酮质子导电了聚合物膜。
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Base played a crucial role in this reaction: in the Pd2/L1 catalyzed α-arylation of ethyl malonate, K3PO4 is the base of choice; in the α-arylation of ethyl acetoacetate, K2CO3 is the most effective base.
在这类催化反应中,碱的选择具有重要的影响:以K3PO4为碱, Pd2/L1催化体系在丙二酸二乙酯的α-芳基化中,富电子溴代芳烃显示较好的活性; Pd2/L1催化的乙酰乙酸乙酯α-芳基化时,以 K2CO3为碱,催化体系显示较好的活性,这个催化体系可控制反应得到α-芳基乙酰乙酸乙酯,而不是脱乙酰基的产物。
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Base played a crucial role in this reaction: in the Pd2/L1 catalyzed α-arylation of ethy malonate, K3PO4 is the base of choice; in the α-arylation of ethyl acetoacetate, K2CO3 is the most effectiv base.
在这类催化反应中,碱的选择具有重要的影响:以K3PO4为碱,Pd2/L1催化体系在丙二酸二乙酯的α-芳基化中,富电子溴代芳烃显示较好的活性;Pd2/L1催化的乙酰乙酸乙酯α-芳基化时,以K2CO3为碱,催化体系显示较好的活性,这个催化体系可控制反应得到α-芳基乙酰乙酸乙酯,而不是脱乙酰基的产物。
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Under these conditions several aryl iodides bearing awide range of functional groups were converted into the corresponding aryl azides in good yields.
在重新优化后的条件下,大部分不活泼芳基溴化物可以与叠氮化钠发生交叉偶联反应得到良好收率的芳基叠氮化储蓄型投资银条合物,但是有拉电子基团取代的芳基溴化物与叠氮化钠的偶联反应则难以进行。
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On the other hand, the molybdenum species of Mo/HZSM-5 catalyst is reduced and carburised during the aromatization of CH4 and this leads to the formation of different kinds of molybdenum species.
Mo/HZSM-5具有较好的甲烷无氧芳构化性能,但迄今在Mo/HZSM-5仅进行了甲烷的无氧芳构化研究,尚未实现甲烷的有氧芳构化反应。
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According to the invention, the natural substances in question are selected from: hydroxy-cinnamic acids and the esters and depsides thereof; plant phenols which can be derived from hydroxy-cinnamic acids; polymers of hydroxy-cinnamic alcohols; other natural substances of plant origin which have anti-mutagenic and aromatising properties and are combined with anti-oxydant vitamins or with the precursors and/or derivatives thereof; and other anti-oxidant vitamins which are made to form complexes with eucaryotic cell cultures.
按照本发明,这些天然物质选自羟基肉桂酸及其酯和缩酚酸、可以由羟基肉桂酸衍生得到的植物酚、羟基肉桂醇的聚合物、具有抗诱变性和芳化性质的并且与维生素合用的其他植物源天然物质、以及与真核细胞培养物络合的其他抗氧化性维生素。
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We studied the nonlinear optical properties of fullerene and its arylatedderivative.They both exhibit weak self-defocusing and strong RSA.
研究了芳化富勒烯及富勒烯的非线性光学性质,它们都具有弱的非线性自散焦和较强的反饱和吸收。
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The main aromatic production technologies are reviewed which included catalytic reforming, aromatic extraction, toluene disproportionation and transalkylation process, isomerization of xylenes and separation of PX.
分析了近年来国内外聚酯和对二甲苯的供需状况及未来需求发展趋势;介绍了当前芳烃主要生产技术,包括催化重整、芳烃抽提、甲苯歧化与烷基转移、二甲苯异构化和二甲苯分离等;指出了扩大芳烃原料来源、通过催化剂的改进提高甲苯歧化过程的对二甲苯选择性、提高C9及以上重芳烃处理能力、提高乙苯转化率等将是未来芳烃技术的主要发展方向。
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thermoselective aromatization:热选择的芳化
thermoregulator 温度第器 | thermoselective aromatization 热选择的芳化 | thermosetting adhesive 热硬化胶着剂
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catalytic aromatization:催化芳化
catalytic analysis 催化分析 | catalytic aromatization 催化芳化 | catalytic combustion 催化燃烧
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aromatization; arylation:芳化[作用]
"aromatic water","香水" | "aromatization; arylation","芳化[作用]" | "aromatizer","香料;芳化剂"
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aromatizer:香料;芳化剂
aromatifation 芳化<作用> | aromatizer 香料;芳化剂 | aromatizing cracking 芳化裂炼
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aromatophor:芳基
aromatizing cracking 芳化裂炼 | aromatophor 芳基 | arone 芳酮
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aromatophor; aryl group:芳基
"aromatizing cracking","芳化裂炼" | "aromatophor; aryl group","芳基" | "arone","芳酮"
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aromatizing:芳化的
aromatize 薰以香气 | aromatizing 芳化的 | aromatoussweet-scented 芳香的
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aromatizing cracking:芳化裂炼
aromatizer 香料;芳化剂 | aromatizing cracking 芳化裂炼 | aromatophor 芳基
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aromatizing agent:加香剂, 调香料, 芳化剂
aromatizer || 香料 芳香剂 | aromatizing agent || 加香剂, 调香料, 芳化剂 | aromatizing cracking || 芳构裂化
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aromatizing agent:加香剂,芳化剂,调香料
antisticking agent抗黏剂,防黏剂,脱膜剂 | aromatizing agent加香剂,芳化剂,调香料 | artificial flavoring agent人工食品香料,人造风味剂