3-bromo-2,4,5-triphenylfuran | 53751-25-0

• 分子结构分类: 有机化合物 - 有机卤素化合物 - 芳基卤化物
• 英文名称: 3-bromo-2,4,5-triphenylfuran
• 英文别名: 3-bromo-2,4,5-triphenyl-furan；3-Brom-2,4,5-triphenyl-furan
• CAS: 53751-25-0
• 化学式: C₂₂H₁₅BrO
• 分子量: 375.264
• InChiKey: CYXCHQXHJXKILC-UHFFFAOYSA-N

物化性质

• 熔点：
  129 °C
• 沸点：
  407.3±33.0 °C(Predicted)
• 密度：
  1.320±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  24
• 可旋转键数：
  3
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  13.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  3-bromo-2,4,5-triphenylfuran 在 盐酸 、 硝酸 、 溶剂黄146 作用下， 生成 2-methoxy-2,4,5-triphenyl-2H-furan-3-one
  参考文献：
  名称：

  The Conversion of Unsaturated 1,4-Diketones into Furans and Hydroxyfuranones

  摘要：

  DOI：

  10.1021/ja01263a018
• 作为产物：
  描述：

  2,3,5-三苯基呋喃 在 五溴化磷 作用下， 生成 3-bromo-2,4,5-triphenylfuran
  参考文献：
  名称：

  The 2,3,5-Triphenylfurans and the Related Saturated and Unsaturated 1,4-Diketones

  摘要：

  DOI：

  10.1021/ja01327a043

文献信息

• Fe-Catalyzed Cycloisomerization of Aryl Allenyl Ketones: Access to 3-Arylidene-indan-1-ones
  作者：Johannes Teske、Bernd Plietker

  DOI：10.1021/acs.orglett.8b00612

  日期：2018.4.20

  A cycloisomerization of aryl allenyl ketones to 3-arylidene-indan-1-ones using a cationic Fe-complex as a catalyst is reported. The catalyst opens a synthetically interesting reaction pathway to this surprisingly underrepresented class of indanones that are not accessible using alternative catalytic systems.

  报道了使用阳离子铁络合物作为催化剂将芳基烯基酮环异构化成3-亚芳基-茚满-1-酮。催化剂为这种令人惊奇地代表性不足的茚满酮类打开了合成上令人感兴趣的反应途径，而使用替代的催化体系是无法达到的。
• One-step synthesis of 5-acylisothiazoles from furans
  作者：Jérôme Guillard、Christelle Lamazzi、Otto Meth-Cohn、Charles W. Rees、Andrew J. P. White、David J. Williams

  DOI：10.1039/b101157j

  日期：——

  Premixed ethyl carbamate, thionyl chloride and pyridine (which generate thiazyl chloride, NSCl) in boiling benzene or toluene convert 2,5- and 2,3,5-substituted furans into 5-acylisothiazoles regiospecifically. The reactions are much faster and generally higher yielding in boiling chlorobenzene with more thionyl chloride and with pyridine or isoquinoline as base. Under the more vigorous conditions, even fully substituted 3-bromofurans give isothiazoles, with the displacement of bromine. Deactivated furans, with electron-withdrawing groups such as ester, cyano, benzoyl and phenylsulfonyl in the α-position, react under the more vigorous conditions to give 5-acylisothiazoles with the electronegative group in the 3-position. The ‘activated’ 2-methyl-5-phenyl- and 5-phenyl-2-phenylthio-furans react analogously, with the more electron-releasing group becoming part of the 5-acyl substituent, exclusively or predominantly. These results are explained by initial electrophilic attack of the furan ring to give a β-thiazyl derivative which spontaneously ring-opens and closes to the isothiazole. The X-ray structures of five of the differently substituted isothiazole compounds are reported. All have very similar patterns of bonding within their isothiazole rings that appear to be independent of the electron-withdrawing or -donating nature of the substituents. Three of the compounds (8a, 8g and 13) have loosely linked chain structures in the solid state, adjacent molecules being connected by combinations of hydrogen bonding and π–π stacking interactions.

  预混的乙基氨基甲酸、亚硫酰氯和吡啶（生成噻唑氯，NSCl）在沸腾的苯或甲苯中能够进行区域特异性地将2,5-和2,3,5-取代的呋喃转化为5-酰基异噻唑。在沸腾的氯苯中，反应更快，产率普遍更高，且使用了更多的亚硫酰氯及吡啶或异喹啉作为碱。在更激烈的反应条件下，甚至完全取代的3-溴呋喃也能与溴发生取代反应生成异噻唑。对于那些带有电子吸引基团（如酯、氰、苯甲酰和苯磺酰）且位于α位的非活性呋喃，在较为激烈的条件下也能反应，生成5-酰基异噻唑，其中电负性基团位于3位。这些“活化”型的2-甲基-5-苯基和5-苯基-2-苯硫基呋喃也表现出类似的反应，其中电子供给基团会独占或主导成为5-酰基取代基。其结果可以通过呋喃环的初始亲电攻击解释，生成β-噻唑衍生物，随后自发环打开并闭合成异噻唑。报告了五种不同取代异噻唑化合物的X射线结构，所有化合物在其异噻唑环内的键合模式非常相似，似乎与取代基的电子吸引或供给特性无关。三种化合物（8a、8g和13）在固态下具有松散联接的链结构，邻近的分子通过氢键和π–π堆叠相互作用相连。
• Reaction of furans with trithiazyl trichloride: a new synthesis of isothiazoles
  作者：Xiao-Lan Duan、Ross Perrins、Charles W. Rees

  DOI：10.1039/a700358g

  日期：——

  Trithiazyl trichloride 1 converts 2,5-diphenylfuran into 5-benzoyl-3-phenylisothiazole 2 regiospecifically and in high yield. This is a new ring opening of furans and a new synthesis of isothiazoles. 2,5-Bis(4-methylphenyl)furan, 3-bromo-2,5-diphenylfuran, 2,3,5-triphenylfuran, 2,5-di-tert-butylfuran and its 3-chloro and 3-bromo derivatives react in an entirely analogous manner to give the corresponding isothiazoles (55–85%) in synthetically useful, one-pot, conversions. 2,5-Diphenylthiophene reacts more slowly with the trimer 1 to give the same product, 2, as the corresponding furan, probably by oxidation of the analogous thiobenzoyl compound by the reagent, which is shown to oxidise thiobenzophenone to benzophenone very rapidly. Tetraphenylcyclopentadienone 8 reacts rapidly with the trimer to give 3,4,5,6-tetraphenyl-2(1H)-pyridone 10 (56%). Possible mechanisms in which the monomer, Cl–SN, is the reacting species are proposed for all of these reactions.

  三氮化氯化物1使2,5-二苯基呋喃转化为具有区域选择性和高得率的5-苯甲酰-3-苯基异噻唑2。这是呋喃的新环开化和异噻唑的新合成。2,5-双(4-甲基苯基)呋喃、3-溴-2,5-二苯基呋喃、2,3,5-三苯基呋喃、2,5-二叔丁基呋喃及其3-氯和3-溴衍生物以完全类似的方式反应，生成相应的异噻唑（55-85%），实现合成上有用的一锅法转化。2,5-二苯基噻吩与三聚物1的反应速度较慢，生成相同的产物2，可能是由于该试剂对类似的噻苯乙酰化合物的氧化，已证明其能迅速将噻苯基酮氧化为苯基酮。四苯基环戊二烯酮8与三聚物迅速反应，生成3,4,5,6-四苯基-2(1H)-吡啶酮10（56%）。对于所有这些反应，提出了单体Cl–SN作为反应物种的可能机制。
• Allen; Rosener, Journal of the American Chemical Society, 1927, vol. 49, p. 2112
  作者：Allen、Rosener

  DOI：——

  日期：——
• THE ACTION OF HEAT ON CERTAIN BROMONITRO COMPOUNDS
  作者：C. F. H. ALLEN、C. V. WILSON

  DOI：10.1021/jo01208a009

  日期：1940.3