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P-Nitro-ethyl benzoate was synthesized with potassium bisulfate as catalyst for the first time.

以硫酸氢钾为催化剂，合成对硝基苯甲酸乙酯，并对影响产率的诸因素进行了考察。

The trifluoromethyl modified benzofuran compounds synthesized by the invention contain a plurality of functional groups in benzene ring portion, and can be used as precursor for subsequent synthesis of benzofuran medicine intermediate containing trifluoromethyl.

本发明合成的三氟甲基修饰的苯并呋喃类化合物，苯环部分包括多种官能团，可以作为后续合成含三氟甲基苯并呋喃药物中间体的前体。

Some new lignans of dibenzocycloheptadiene and benzofuran analogues were first synthesized successfully by intramolecular nonphenolic oxidative coupling and rearrangement of the 1,4-biaryl-2,3-dimethyl-2,3epoxide substituted butanes with DDQ in TFA.

以DDQ为非酚氧化偶合试剂与1，4-二芳基-2，3-环氧类化合物进行分子内的非酚氧化偶合反应，首次合成了二苯骈环庚二烯类和苯骈呋喃类的新型木脂素，其结构由不同光谱和X-单晶衍射所确证。

Six novel dihydrobenzofuran and benzofuran neolignans compounds(1～6) were synthesized by knoevenagel reactiton,esterfication, biomimetic oxidative coupling ,DDQ dehydrogenation,reduction and hydrolysis with 4-hydroxybenzaldehyde and malonic acid as starting material.

以对羟基苯甲醛和丙二酸为原料，经Knoevenagel缩合反应，酯化、仿生氧化偶联、DDQ脱氢、还原和水解等反应步骤，合成了6种未见文献报道的苯并二氢呋喃新木脂素和苯并呋喃新木脂素类化合物(1~6)。

The graft copolymer has an optimum effect of pour point depressing for the Daqing crude oil when it was synthesized under the conditions of that the mole ratio of EVA and octadecyl maleimide was 1:20, mass fraction peroxidation benzoin formyl was 2.5%, polymerization time was 6h, and the polymerization temperature was 90℃.

以目标物的降凝幅度为评价指标，优选出适合的合成条件为：EVA与十八烷基马来酰亚胺的摩尔比为1：20，引发剂过氧化二苯甲酰的量为2.5%，聚合时间6h，聚合温度为90℃。

The compound of 2, 6-Bis (4-aminophenoxy) benzonitrile (26B4APBN) was synthesized through condensation reaction between 4-aminophenol (4AP) and 2, 6-dichlorobenzonitrile.

氨基苯酚和2， 6-二氯苯腈通过缩合反应，合成得到了2， 6-双(4-氨基苯氧基)苯甲腈(26B4APBN)。

The 3-chloro-4-trifluoromethoxy benzonitrile was synthesized from 3-chloro-4-trifluorome- thoxy aniline by diazotization, formaldoximation ,hydrolysis and cyanation.

以3-氯-4-三氟甲氧基苯胺为原料，经重氮化、甲醛肟化、水解和腈化反应得到纯度≥99。

A series of N-bonded donor-acceptor derivatives of phenothiazine containing benzene, anisole, pyridine, naphthalene, acetophenone, and benzonitrile as an electron acceptor was synthesized.

合成了一系列的N-10位取代的吩噻嗪给体受体化合物，这些受体包括苯、苯甲醚、吡啶、萘、苯乙酮和苯乙腈。

To improve the cyano reactivity, cyano-terminated PPENs were prepared by the end-capping reaction of PPEN-OL with CBN; benzonitrile terminated polys were also prepared by the polycondensation of excess 4,4'-oxydianiline with 1,2-dihydro-2-(4-carboxyphenyl)-4-[4-(4-carboxyphenoxyl)phenyl]-phthalazinone, followed by end-capping with CBA. The polymers synthesized exhibited good solubility in NMP, DMAc and DMF, and were crosslinked to afford phenyl-s-triazine-containing polymers under the similar conditions.

为提高氰基活性，以对氯苯腈为原料，对PPEN-OL进行封端，设计合成了含氰端基的聚芳醚腈；以含二氮杂萘酮联苯结构二酸单体与4，4'-二氨基二苯醚为原料，经Yamazaki膦酰化缩聚，并用对氰基苯甲酸进行封端，合成了含氰端基的聚芳醚酰胺。

A new polysiloxane with the side chain of benzophenone groups is synthesized.

合成了侧链中含二苯甲酮基的聚有机硅氧烷。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。