2-methyl-1,1-(4,4-dimethoxydiphenyl)-1-propene | 26957-36-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2-methyl-1,1-(4,4-dimethoxydiphenyl)-1-propene
• 英文别名: 1,1-Bis(p-methoxyphenyl)-2-methyl-1-propene；1,1-di(4-methoxyphenyl)-2,2-dimethylethene；1,1-bis-(4-methoxy-phenyl)-2-methyl-propene；1,1-Bis-(4-methoxy-phenyl)-2-methyl-propen；α.α-Dimethyl-β.β-bis-(4-methoxy-phenyl)-aethylen；1,1-Bis-(4-methoxy-phenyl)-2-methyl-propen-(1)；1,1'-(2-Methylprop-1-ene-1,1-diyl)bis(4-methoxybenzene)；1-methoxy-4-[1-(4-methoxyphenyl)-2-methylprop-1-enyl]benzene
• CAS: 26957-36-8
• 化学式: C₁₈H₂₀O₂
• 分子量: 268.356
• InChiKey: CNMOABJZJURKJQ-UHFFFAOYSA-N

物化性质

• 熔点：
  64 °C
• 沸点：
  212-216 °C(Press: 20 Torr)
• 密度：
  1.027±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.4
• 重原子数：
  20
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-methyl-1,1-(4,4-dimethoxydiphenyl)-1-propene 在 氢氧化钾 作用下， 以 甲醇 为溶剂， 生成 1,1-bis(4-hydroxyphenyl)-2-methylprop-1-ene
  参考文献：
  名称：

  Synthesis of Unsymmetrical Diphenylalkenes¹

  摘要：

  DOI：

  10.1021/jm00342a033
• 作为产物：
  描述：

  1,1-bis(4-methoxypheny)ethanol 在 Ca zeolite 、 对甲苯磺酸 作用下， 以 乙醚 、 正己烷 、 苯 为溶剂， 反应 4.0h， 生成 2-methyl-1,1-(4,4-dimethoxydiphenyl)-1-propene
  参考文献：
  名称：

  Activation Conditions Play a Key Role in the Activity of Zeolite CaY:  NMR and Product Studies of Brønsted Acidity

  摘要：

  CaY, activated under different conditions, was characterized with H-1, (31)p, and H-1/27AI double resonance MAS NMR. The H-1 MAS NMR spectra of CaY, calcined in an oven at 500 degrees C, shows resonances from H2O (bound to Ca2+ and the zeolite framework), CaOH+, aluminum hydroxides, silanols, and Bronsted acid sites. No evidence for Lewis acidity is observed on adsorption of trimethylphosphine, and an estimate of approximate to 16 Bronsted acid sites per unit cell is obtained for this sample. CaY activated in an oven at higher temperatures contains less water, but all the other species are still present. In contrast, CaY activated by slow ramping of the temperature under vacuum to 500 or 600 degrees C shows a; much lower concentration of Bronsted acid sites (<1/unit cell). Again, no evidence for Lewis acidity was observed. These NMR results have been utilized to understand the very different product distributions that are observed for reactions of 1,1- and 1,2-diarylethylenes in zeolite CaY activated in an oven (in air) and under vacuum. Samples with high concentrations of Bronsted acid sites react stoichiometrically with these sites, yielding diarylalkanes. At low concentrations, the Bronsted acid sites can act catalytically resulting in isomerization reactions.

  DOI：

  10.1021/jp980385w

文献信息

• 3,5-Bis(trifluoromethyl)phenyl Sulfones in the Julia–Kocienski Olefination – Application to the Synthesis of Tri- and Tetrasubstituted Olefins
  作者：Diego A. Alonso、Mónica Fuensanta、Carmen Nájera

  DOI：10.1002/ejoc.200600478

  日期：2006.10

  with carbonyl compounds employing phosphazene base P4-tBu at room temp. in THF, affording tri- and tetrasubstituted olefins in good yields. The Julia–Kocienski olefination between primary alkyl BTFP sulfones 8a,b and aromatic and aliphatic ketones affords the corresponding trisubstituted alkenes in good yields and low stereoselectivities. On the other hand, higher yields and stereoselectivities are

  3,5-双（三氟甲基）苯基（BTFP）砜 8a-d 成功地用于室温下使用磷腈碱 P4-tBu 的羰基化合物的改性 Julia 烯化反应。在 THF 中，以良好的产率提供三取代和四取代的烯烃。伯烷基 BTFP 砜 8a、b 与芳香族和脂肪族酮之间的 Julia-Kocienski 烯化以良好的产率和低立体选择性提供相应的三取代烯烃。另一方面，通过另一种方法，仲烷基 BTFP 砜 8c,d 与脂肪族、芳香族和 α,β-不饱和醛的偶联，在三取代烯烃的合成中获得了更高的产率和立体选择性。首次，当异丙基 BTFP 砜 8c 与脂肪族和芳香族酮反应时，通过 Julia-Kocienski 协议合成四取代烯烃，在 THF 回流下使用 P4-tBu 作为碱。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
• Nanoindentation and adhesion of sol-gel-derived hard coatings on polyester
  作者：C. M. Chan、G. Z. Cao、H. Fong、M. Sarikaya、T. Robinson、L. Nelson

  DOI：10.1557/jmr.2000.0025

  日期：2000.1

  We investigated sol-gel-derived silica-based hard coatings on modified polyester substrates. The silica network was modified by incorporating an organic component and adding transition metal oxides. These modifications resulted in tailored thermal, optical, and mechanical properties of the coatings. Various low-temperature densification techniques were studied including sol-preparation procedure, enhanced solvent evaporation, ultraviolet irradiation, and low-temperature heating (below 150 °C). Oxygen plasma etching was applied to improve the adhesion of the sol-gel coatings on the plastic surface. Nanoindentation analysis revealed that the coatings have a surface hardness up to 2.5 ± 0.27 GPa and an elastic modulus up to 13.6 ± 0.4 GPa, approximately an order of magnitude higher than that of the plastic surface.

  我们研究了改性聚酯基底上的溶胶-凝胶衍生二氧化硅硬涂层。通过加入有机成分和过渡金属氧化物，对二氧化硅网络进行了改性。这些改性使涂层具有量身定制的热学、光学和机械性能。研究了各种低温致密化技术，包括溶胶制备程序、增强溶剂蒸发、紫外线照射和低温加热（低于 150 °C）。为了提高溶胶-凝胶涂层在塑料表面的附着力，还采用了氧等离子刻蚀技术。纳米压痕分析表明，涂层的表面硬度高达 2.5 ± 0.27 GPa，弹性模量高达 13.6 ± 0.4 GPa，比塑料表面高出约一个数量级。
• An Electrochemical Cinnamyl C—H Amination Reaction Using Carbonyl Sulfamate
  作者：Shuai Liu、Jin Li、Dalin Wang、Feng Liu、Xu Liu、Yongyuan Gao、Dai Jie、Xu Cheng

  DOI：10.1002/cjoc.201900028

  日期：2019.6

  An electrochemical cinnamyl C—H amination reaction in the absence of transition metal catalyst and oxidant was reported. The choice of carbonyl sulfamate as nitrogen source is the key to achieve desired chemoselectivity. A series of terminal amine derivatives are prepared using this protocol and the sulfonyl group can be removed with basic hydrolysis. The reaction is suggested to proceed via a continuous

  报道了在不存在过渡金属催化剂和氧化剂的情况下的电化学肉桂基CH胺化反应。选择氨基磺酸羰基酯作为氮源是实现所需化学选择性的关键。使用该方案制备了一系列末端胺衍生物，并且可以通过碱性水解除去磺酰基。建议该反应通过连续的阳极氧化，去质子化，阳极氧化和分子间亲核加成途径进行，这证明了电化学肉桂酸CH胺化的第一个例子。
• Characterization of Persistent Intermediates Generated upon Inclusion of 1,1-Diarylethylenes within CaY Zeolite:  Spectroscopy and Product Studies
  作者：P. Lakshminarasimhan、K. J. Thomas、L. Brancaleon、P. D. Wood、L. J. Johnston、V. Ramamurthy

  DOI：10.1021/jp990913j

  日期：1999.10.1

  Inclusion of 1,1-diarylethylenes within activated CaY results in the formation of colored samples that are stable for prolonged periods. For example, diphenylethylene generates a green color within CaY. Two reactive intermediates have been shown to be responsible for this color. The species with the short wavelength (lambda(max) 410 nm) absorption has been established to be the diphenylmethyl cation. The identity of the species with the long wavelength ((lambda(max) 620 nm) absorption has been debated for three decades. We establish that the diarylethylene radical cation is not responsible for the long wavelength absorption. Laser flash photolysis studies show that a number of diarylethylene radical cations have a characteristic absorption in the 400 nm region in both solution and in NaY zeolite. The absence of this absorption for diarylethylene-CaY samples unequivocally eliminates the possibility that these radical cations are responsible for color formation. This is substantiated by the fact that a number of 2-methyl-substituted 1,1-diarylethylenes generate only the short wavelength cation absorption upon inclusion in CaY; radical cation formation would be expected to be equally facile for the methyl-substituted derivatives. Our results suggest that an allylic dimer cation is the most likely source of the long wavelength ((lambda(max) 620 nm) absorption within CaY.
• Vinylic cations from solvolysis. Part 36. Vinylation of aromatic substrates with solvolytically generated trisubstituted vinyl cations
  作者：Tsugio Kitamura、Shinjiro Kobayashi、Hiroshi Taniguchi、Zvi Rappoport

  DOI：10.1021/jo00146a033

  日期：1982.12