cis-1-methoxy-3-methyl-1,3-butadiene | 73451-86-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: cis-1-methoxy-3-methyl-1,3-butadiene
• 英文别名: (Z)-1-methoxy-3-methyl-1,3-butadiene；1-methoxy-3-methyl-1, 3-butadiene；(1Z)-1-methoxy-3-methylbuta-1,3-diene
• CAS: 73451-86-2
• 化学式: C₆H₁₀O
• 分子量: 98.1448
• InChiKey: CEQACJSYZXQWRM-PLNGDYQASA-N

物化性质

• 沸点：
  103.8±9.0 °C(Predicted)
• 密度：
  0.801±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  7
• 可旋转键数：
  2
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为产物：
  描述：

  1,1,3-三甲氧基-3-甲基丁烷 在 magnesium monohydrogen phosphate 、 sodium silicate 作用下， 350.0~400.0 ℃ 、3.33 kPa 条件下， 反应 1.0h， 生成 3-甲基-2-丁烯醛 、 反式-1-甲氧基-3-甲基-1,3-丁二烯 、 cis-1-methoxy-3-methyl-1,3-butadiene
  参考文献：
  名称：

  Synthetic methods. 15. Unsaturated acyl derivatives of silicon, germanium, and tin from metalated enol ethers

  摘要：

  DOI：

  10.1021/ja00525a019

文献信息

• Synthesis of (<i>E</i>)‐1‐aryl‐2‐buten‐1‐ones by the Cross‐Coupling of Lithium 1‐methoxy‐1,3‐butadienes with Aryl Bromides
  作者：Paco Visser、Anka Hagelschuer、Ben L. Feringa

  DOI：10.1002/adsc.202301249

  日期：2024.2.20

  previous work on the cross-coupling of lithium vinyl ethers with aryl bromides and sequential hydrolysis towards acetophenones,21 we considered the possibility of directly using lithium 1-methoxy-1,3-butadienes as cross-coupling partners in the Pd-catalysed reaction with aryl bromides, affording isomerically pure (E)-α,β-unsaturated ketones upon hydrolysis. Scheme 1 Open in figure viewerPowerPoint Methodologies

  α,β-不饱和羰基化合物在有机合成化学中发挥着重要作用，由于其作为大肠杆菌底物的多功能操作而得到广泛应用。G。共轭加成反应、1 Nazarov 环化反应、2 Morita-Baylis-Hillman 反应、3环氧化反应、4和 Diels-Alder 反应。5此外，它们还广泛应用于功能化结构的合成，包括近红外荧光团6和生物活性化合物。7已经开发出多种方法来形成 α,β-不饱和酮（方案 1），包括 Pd 催化脱氢、8羰基化、9 Horner-Wadsworth-Emmons-、10 Claisen-Schmidt 缩合（交叉反应） -Aldol)-, 11 Heck- 12和加氢酰化反应。13然而，这些方案通常采用多步合成，需要使用高温，或者特别是提供 ( E )/( Z )-混合物。Venturello 及其同事在 21 世纪初报道了一种基于 1-芳基-1-烷氧基-1,3 水解形成异构纯 (E)-α
• Total Synthesis of Aphadilactones A–D
  作者：Jian-Peng Yin、Min Gu、Ying Li、Fa-Jun Nan

  DOI：10.1021/jo501117k

  日期：2014.7.3

  The first total synthesis of aphadilactones A-D, diastereomeric natural products recently isolated from the Meliaceae plant Aphanamixis grandifolia by Yue and co-workers, which possess an unprecedented carbon skeleton, has been achieved. The synthesis features a catalytic asymmetric hetero-Diels-Alder reaction to form the dihydropyran ring, concurrent installation of the lactone and furan moieties via a tandem acid-catalyzed acetal cleavage, oxidation, and cyclization process, and an intermolecular Diels-Alder reaction to forge the target products.
• Asymmetric Catalysis of Diels-Alder Cycloadditions by an MS-Free Binaphthol-Titanium Complex: Dramatic Effect of MS, Linear vs Positive Nonlinear Relationship, and Synthetic Applications
  作者：Koichi Mikami、Yukihiro Motoyama、Masahiro Terada

  DOI：10.1021/ja00086a014

  日期：1994.4

  Asymmetric Diels-Alder (D.-A.) reaction of 5-hydroxynaphthoquinone (juglone) with butadienyl acetate catalyzed by the binaphthol-derived chiral titanium (BINOL-Ti) complex 1 proceeds in only 9% ee in the presence of molecular sieves (MS). Remarkably, however, this reaction proceeds in 76-96% ee with BINOL-Ti complex 1 freed from MS to provide the endo-adducts useful for the synthesis of anthracyclines and tetracyclines. The solid MS-free BINOL-Ti complex 1 is stable for months at -20 degrees C, Enhancements in endo selectivity and asymmetric induction are observed with the MS-free BINOL-Ti 1 also in the catalyzed D.-A. cycloaddition of methacrolein and glyoxylate with 1,3-dienol ethers and esters. The glyoxylate adducts can be converted to the mevinolin (compactin) intermediates. Surprisingly, the MS-free complex 1 exhibits not only a linear relationship between the ee's of BINOL-Ti 1 and the D.-A. products but also a positive nonlinear effect (asymmetric amplification), depending simply on the mixing manner of (R)-1 with (S)-1 or (+/-)-1.