呋喃（英語： furan ，IUPAC：oxole） [1] ，化学用名氧杂茂 [2] [3] 或𫫇茂 [需明示出處] ，是一种五元芳香性 杂环 有机物，其五元环含有四个碳 原子、一个氧原子和两个环内共轭双键，并具有类似于苯环的6个π电子大共轭体系 [4] 。

2024年4月29日 · Furan - cas 110-00-9, synthesis, structure, density, melting point, boiling point

Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen atom. Chemical compounds containing such rings are also referred to as furans. Furan is a colorless, flammable, highly volatile liquid with a boiling point close to room temperature.

呋喃（oxole），是最简单的含氧五元杂环化合物，化学式为C4H4O，它存在于松木焦油中，为无色液体，具有类似氯仿的气味，难溶于水，易溶于有机溶剂。它的蒸气遇有被盐酸浸湿过的松木片时，即呈现绿色，叫做松木反应，可用来鉴定呋喃的存在。它有麻醉和弱刺激作用，极度易燃。吸 …

Furan | C4H4O | CID 8029 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

中文名:呋喃,英文名:Furan,CAS:110-00-9,化学式:C4H4O,分子量:68.07,密度:0.936 g/mL at 25 °C(lit.),熔点:-85.6 °C,沸点:67°C10mm Hg(lit.),闪点:160°F,水溶性:insoluble,蒸汽压:1672 mm Hg ( 55 °C),折射率:n20/D 1.5070(lit.),MSDS.

furan, any of a class of organic compounds of the heterocyclic aromatic series characterized by a ring structure composed of one oxygen atom and four carbon atoms. The simplest member of the furan family is furan itself, a colourless, volatile, and …

Furan is a five-member heterocyclic aromatic organic compound consisting of four carbon and one oxygen atoms. From: Chemistry of 2-Oxoaldehydes and 2-Oxoacids, 2022

2024年4月22日 · furan is a colorless, highly volatile and flammable liquid with a boiling point of 31 ºC. It is also slightly soluble in water, soluble in common organic solvents, and with a dipole moment μ = 0.72 Debye. It has an odor similar to chloroform. The ring system of furan is found in many natural compounds, is toxic and may be carcinogenic in humans.

2024年4月17日 · During protonation, electron-releasing substituents on furan generate reactive electrophiles that activate polymerization and lead to ring-opening reactions. Mercuration - Mercuration is an easy process for furan. Reduction - A simple furan cannot be reduced to a tetrahydrofuran without opening its ring. It is possible to decompose furoic acid ...