1,3-dihydro-4-phenylisobenzofuran | 502483-86-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异香豆素
• 英文名称: 1,3-dihydro-4-phenylisobenzofuran
• 英文别名: 4-phenylphthalan；4-Phenyl-1,3-dihydroisobenzofuran；4-phenyl-1,3-dihydro-2-benzofuran
• CAS: 502483-86-5
• 化学式: C₁₄H₁₂O
• 分子量: 196.249
• InChiKey: HBFQMSGBLXZHTD-UHFFFAOYSA-N

物化性质

• 沸点：
  361.6±31.0 °C(Predicted)
• 密度：
  1.122±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.8
• 重原子数：
  15
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  1,3-dihydro-4-phenylisobenzofuran 在 水 、 lithium 作用下， 以 四氢呋喃 为溶剂， 反应 3.5h， 生成 2-甲基-3-苯基苯甲醇
  参考文献：
  名称：

  Regiochemistry in the reductive opening of phthalan derivatives

  摘要：

  The lithiation of phthalan derivatives 4, 9 and 12 with an excess of lithium in the presence of a catalytic amount of 4,4'-ditert-butylbiphenyl (DTBB) in THF at -78 degrees C gives dianionic intermediates 5, 10 and 13, respectively, which by reaction with different electrophiles [H2O, tau-BuCHO, Me2CO, (EtO)(2)CO] at the same temperature, followed by hydrolysis, leads to regioselective functionalised naphthalenes 7, and biphenyls 11 and 14. The reductive opening takes place with high or total regioselectivity and can be explained considering the electron density in the dianion or in the radical anion, which are formed previous to the carbon-oxygen bond excision. The lithiation of the dihydrofurophthalan derivative 18 with the same reaction mixture but at higher temperature (0 degrees C) leads to intermediates 19 and 20, resulting from a single and a double reductive cleavage, respectively, which after addition of H2O and benzaldehyde as electrophiles gives a mixture of compounds 21 and 22. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2007.03.069
• 作为产物：
  描述：

  1-溴-2,3-双(溴甲基)苯 在 钯 四丁基氢氧化铵 作用下， 以 1,4-二氧六环 为溶剂， 生成 1,3-dihydro-4-phenylisobenzofuran
  参考文献：
  名称：

  Regiochemistry in the reductive opening of phthalan derivatives

  摘要：

  The lithiation of phthalan derivatives 4, 9 and 12 with an excess of lithium in the presence of a catalytic amount of 4,4'-ditert-butylbiphenyl (DTBB) in THF at -78 degrees C gives dianionic intermediates 5, 10 and 13, respectively, which by reaction with different electrophiles [H2O, tau-BuCHO, Me2CO, (EtO)(2)CO] at the same temperature, followed by hydrolysis, leads to regioselective functionalised naphthalenes 7, and biphenyls 11 and 14. The reductive opening takes place with high or total regioselectivity and can be explained considering the electron density in the dianion or in the radical anion, which are formed previous to the carbon-oxygen bond excision. The lithiation of the dihydrofurophthalan derivative 18 with the same reaction mixture but at higher temperature (0 degrees C) leads to intermediates 19 and 20, resulting from a single and a double reductive cleavage, respectively, which after addition of H2O and benzaldehyde as electrophiles gives a mixture of compounds 21 and 22. (c) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2007.03.069

文献信息

• Highly-functionalized arene synthesis based on palladium on carbon-catalyzed aqueous dehydrogenation of cyclohexadienes and cyclohexenes
  作者：Naoki Yasukawa、Hiroki Yokoyama、Masahiro Masuda、Yasunari Monguchi、Hironao Sajiki、Yoshinari Sawama

  DOI：10.1039/c7gc03819d

  日期：——

  Transition metal-catalyzed dehydrogenation is a clean oxidation method requiring no additional oxidants. We have accomplished a heterogeneous Pd/C-catalyzed aqueous dehydrogenation of 1,4-cyclohexadienes and cyclohexenes to give the corresponding highly-functionalized arenes. Furthermore, various arenes could be efficiently constructed in a one-pot manner via a Diels–Alder reaction and the following

  过渡金属催化的脱氢是一种清洁的氧化方法，不需要其他氧化剂。我们已经完成了Pd / C催化的1,4-环己二烯和环己烯的异水脱氢反应，得到了相应的高度官能化的芳烃。此外，可以通过Diels-Alder反应和随后的脱氢反应以一锅法高效地构建各种芳烃。
• Iridium(<scp>iii</scp>)-bis(imidazolinyl)phenyl catalysts for enantioselective C–H functionalization with ethyl diazoacetate
  作者：N. Mace Weldy、A. G. Schafer、C. P. Owens、C. J. Herting、A. Varela-Alvarez、S. Chen、Z. Niemeyer、D. G. Musaev、M. S. Sigman、H. M. L. Davies、S. B. Blakey

  DOI：10.1039/c6sc00190d

  日期：——

  the interplay of experimental and computational insights. The reaction is tolerant of a variety of diazoacetate precursors and is found to be heavily influenced by the steric and electronic properties of the substrate. Phthalan and dihydrofuran derivatives are functionalized in good yields and excellent enantioselectivities.

  据报道，使用基于实验和计算见解的相互作用而开发的新型 Ir( III )-双(咪唑啉基)苯基催化剂家族，仅接受受体的金属碳烯进行分子间对映选择性 C-H 官能化。该反应能够耐受多种重氮乙酸盐前体，并且发现该反应很大程度上受到底物的空间和电子性质的影响。苯并呋喃和二氢呋喃衍生物以良好的收率和优异的对映选择性进行官能化。
• Iridium Complex-Catalyzed Enantioselective Intramolecular [4+2] Cycloaddition of Dieneynes
  作者：Takanori Shibata、Koji Takasaku、Yuri Takesue、Naohito Hirata、Kentaro Takagi

  DOI：10.1055/s-2002-34217

  日期：——

  A catalytic and highly enantioselective intramolecular [4+2] cycloaddition of dieneynes was achieved by use of chiral iridium complex prepared in situ from [IrCl(cod)]2 and BDPP [2,4-bis(diphenylphosphino)pentane]. The reaction proceeded in refluxed tert-butyl acetate to give chiral cyclohexa-1,4-dienes in very high enantiomeric excess.

  利用原位制备的[IrCl(cod)]2 和 BDPP [2,4-双(二苯基膦)戊烷]手性铱络合物，实现了二炔的分子内[4+2]环加成催化和高对映选择性。 反应在回流的乙酸叔丁酯中进行，得到手性环己-1,4-二烯，对映体的过量率非常高。
• Intramolecular [2+2+1] Cycloadditions with (Cyclobutadiene)tricarbonyliron
  作者：Benjamin A. Seigal、Mi Hyun An、Marc L. Snapper

  DOI：10.1002/anie.200501100

  日期：2005.8.5
• Regioselective reductive opening of substituted phthalans: synthetic applications
  作者：Daniel García、Francisco Foubelo、Miguel Yus

  DOI：10.1016/j.tet.2008.02.072

  日期：2008.5

  The reductive opening of substituted phthalans 6, 11, 12, 20, 21 and 28 with lithium and a catalytic amount of DTBB leads to the formation of corresponding functionalised organolithium intermediates 8, 15, 16, 23, 25 and 29+30 in a regioselective manner. The further reaction of these dianions with different electrophiles, mainly carbonyl compounds, gives the expected functionalised benzylic alcohols 9, 17, 18, 24, 26 and 31+32. The observed stereochemistry can be easily explained taking into account the values of the electron densities deduced by semiempirical PM3 calculations. (c) 2008 Elsevier Ltd. All rights reserved.