苯并呋喃

基本解释 (translations)

coumarone

与苯并呋喃相关的网络例句 [注：此内容来源于网络，仅供参考]

Part 2. Annulation reaction of 3, 4-dichlorocoumarin (1) and 3, 4-dichloromaleimide (8) by a new general annulation strategy developed in this group with 2-phenylbenzofuran (15), 3-phenylbenzofuran (16), 2, 5-diphenyloxazole (17), 2, 5-diphenylthiazole (18), 2-methyl-4-phenylthiazole (19) and 2, 3-dimethoxy-1, 3-butadiene (40) were investigated.

二。在本课题组前一阶段提出的从二氯代环烯酮与1，1-二芳基乙烯的光化反应以及光化反应中得到的环丁烷产物的连续电环化反应对3，4-二氯马来酰亚胺以及3，4-二氯香豆素进行增环反应的工作基础上，研究了3，4-二氯香豆素（1）和3，4-二氯马来酰亚胺（8）与5个α-苯基取代的环烯烃2-苯基苯并呋喃（15），3-苯基苯并呋喃（16），2，5-二苯基噁唑（17），2，5-二苯基噻唑（18），2-甲基-4-苯基噻唑（19），以及一个丁二烯——2，3-二甲氧基丁二烯（40）进行的芳香族增环反应。

The new methods to synthesize 6-hydroxy-3, 8-dioxabicyclo[3.2.1]octane, dihydrobenzofuran and benzofuran derivatives are described in this thesis.

本文主要论述了(5R)-6-羟基-3，8-二氧二环[3.2.1]辛烷，苯并二氢呋喃和苯并呋喃类衍生物的合成新方法。

Polar compounds, such as dihydro-alkyl furan-one, furandione, benzofuran, benzosazol, aldehydes and esters were also detected.

对部分极性化合物分析，检出了二氢烷基呋喃酮系列、呋喃二酮、苯并呋喃及少量醛类和酯类化合物。

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。

The enthalpy change of the sorption process corroborates earlier findings that van der Waals forces dominate the sorption of S- and O-heterocyclic compounds such as thiophene, benzothiophene, benzofuran, and 2-methylbenzofuran.

吸附过程的热焓变化证实了早期的发现：硫和氧类杂环物质（像噻酚、苯并噻吩、苯并呋喃、3甲基苯并呋喃）的吸附主要以范德华力为主。

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 thermodynamic function data, including total energy, enthalpy, entropy, free energy and constant volume molar heat capacity for dibenzo-furan and 135 polybrominated dibenzo-furans, were predicted by fully optimized calculation and frequency analysis at the B3LYP/6-31G* level.

在B3LYP/6-31G*水平上对二苯并呋喃和135个多溴二苯并呋喃系列化合物进行了全优化计算和振动分析，得到各分子的总能量、焓、熵、自由能和恒容热容，研究了这些参数与溴原子的取代数目及取代位置的关系。

Synthesis process Molecular Formula:〓 Molecular Weight: 394 Chemicla name: N-(2, 3-dihydro-2, 7-dimethyl-benzofuran-1-acyl)-N'-tert-butylN'-(3, 5-dimethyl benzoyl) hydrazine Structural formula:〓 This article define a synthesis method of JS118 with (2, 3-dihydro-2, 7-dimethylbenzofuranyl)-6-formic acid, tert-butyl hydrazine hydrochloride acid and 3, 5-dimethyl benzoic acid as main intermediate through four steps of reaction involving, acyl chloridation condensation and so on.

本文主要的研究工作内容：(1)以N-特丁基双酰肼为先导结构，利用分子等排原理和类同合成法进行先导设计，有目的、有选择地重点改变R〓、R〓基团，将具有不同取代基的苯环以及呋喃环、苯并呋喃环、吡咯环、吡啶环等杂环、稠杂环与先导结构进行有机的组合。

Results61 peaks were separated and 16 constituents were identified, which were composed of about 96.46% of the total essential oil.ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.

水芹挥发油中的主要成分为苯氧乙酸烯丙酯（80.17%）、桉叶-4(14)，11-二烯（6.83%）、2，3-二氢-3-甲基-3-苯并呋喃甲醇（2.94%）、柠檬烯（1.63%），云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上，苯氧乙酸烯丙酯含量高，可用作食品工业和化妆品工业的香料。

ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.

水芹挥发油中的主要成分为苯氧乙酸烯丙酯（80.17%）、桉叶-4(14)，11-二烯（6.83%）、2，3-二氢-3-甲基-3-苯并呋喃甲醇（2.94%）、柠檬烯（1.63%），云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上，苯氧乙酸烯丙酯含量高，可用作食品工业和化妆品工业的香料。

与苯并呋喃相关的网络解释 [注：此内容来源于网络，仅供参考]

benzofuran：苯并呋喃

目前所使用的塑料造粒机绝大多数是卤素衍生物或含锑塑料造粒机等,卤系塑料造粒机的存在会导致很多问题,例如当其燃烧时会产生对人体和环境危害的有毒气体,如二嗯英(dioxin)、苯并呋喃(benzofuran)等,这些有毒气体可能引起人体新陈代谢失常,

benzofuran：苯并呋喃,氧茚,香豆酮

Benzoflex | 苯甲酸酯类增塑剂 | benzofuran | 苯并呋喃,氧茚,香豆酮 | benzofuranyl | 苯并呋喃基 氧茚基(来自 benzofuran)

benzofuran; coumarone：苯并呋喃;熏草咔;熏草质;香豆咔;香豆质

苯并呋喃;熏草咔;熏草质;香豆咔;香豆质 benzofuran; coumarone | 邻苯二甲醇 benzoglycol | 苯并咪唑 benzoglyoxaline; benzimidazole

苯并呋喃基 氧茚基(来自 benzofuran)：benzofuranyl

benzofuran | 苯并呋喃,氧茚,香豆酮 | benzofuranyl | 苯并呋喃基 氧茚基(来自 benzofuran) | benzoglycols | 苯乙二醇

coumarone：[化]香豆酮,氧茚,苯并呋喃

airplane refuel tank 飞机加油箱 | coumarone [化]香豆酮,氧茚,苯并呋喃 | erudition 博学

coumarone：苯并呋喃

coumarin 氧杂萘邻酮 | coumarone 苯并呋喃 | Council for Mutual Economic Aid 经互会

coumarone resin：苯并呋喃尸

coumarone indene resin 苯并呋喃 茚尸 | coumarone resin 苯并呋喃尸 | counter 计数管

benzofuryl：苯并呋喃基;熏草基

亚胺苄基 benzimidoyl; benzimidoyle | 苯并呋喃基;熏草基 benzofuryl | 苯并哌喃基 benzopyranyl

benzopyranyl：苯并哌喃基

苯并呋喃基;熏草基 benzofuryl | 苯并哌喃基 benzopyranyl | 苯并[口+咢][口+井]基 benzoxazinyl

diphenylene oxide：二苯并呋喃

diphenylene 二亚苯基 | diphenylene-oxide 二苯并呋喃 | diphenyleneoxide 联苯抱氧