(3-benzothiophenyl)(phenyl)methyl pivalate | 1613376-69-4

• 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: (3-benzothiophenyl)(phenyl)methyl pivalate
• CAS: 1613376-69-4
• 化学式: C₂₀H₂₀O₂S
• 分子量: 324.444
• InChiKey: VTTOXKZDXZZMTC-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.58
• 重原子数：
  23.0
• 可旋转键数：
  3.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  26.3
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  5-苯基恶唑 、 (3-benzothiophenyl)(phenyl)methyl pivalate 在 双(乙腈)氯化钯(II) 、 苯基二环己基膦 、 lithium tert-butoxide 作用下， 以 1,4-二氧六环 为溶剂， 反应 6.0h， 以76%的产率得到2-(benzo[b]thiophen-3-yl(phenyl)methyl)-5-phenyloxazole
  参考文献：
  名称：

  Synthesis of Triarylmethanes by Palladium-Catalyzed C–H/C–O Coupling of Oxazoles and Diarylmethanol Derivatives

  摘要：

  A PdCl2(MeCN)2/PPhCy2 catalyst couples oxazoles with diarylmethyl carbonates or pivalates to form the corresponding triarylmethanes in good yields. The catalysis involves successive secondary benzylic sp(3) C-O and heteroaromatic sp(2) C-H cleavages and provides an effective access to heteroarene-containing triarylmethanes from nonhalogenated and nonmetalated starting materials, which is complementary to precedented cross-coupling technologies with organic halides and organometallic reagents.

  DOI：

  10.1021/jo5010636
• 作为产物：
  描述：

  三甲基乙酰氯 、 3-benzothienyl(phenyl)methanol 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 2.5h， 生成 (3-benzothiophenyl)(phenyl)methyl pivalate
  参考文献：
  名称：

  Synthesis of Triarylmethanes by Palladium-Catalyzed C–H/C–O Coupling of Oxazoles and Diarylmethanol Derivatives

  摘要：

  A PdCl2(MeCN)2/PPhCy2 catalyst couples oxazoles with diarylmethyl carbonates or pivalates to form the corresponding triarylmethanes in good yields. The catalysis involves successive secondary benzylic sp(3) C-O and heteroaromatic sp(2) C-H cleavages and provides an effective access to heteroarene-containing triarylmethanes from nonhalogenated and nonmetalated starting materials, which is complementary to precedented cross-coupling technologies with organic halides and organometallic reagents.

  DOI：

  10.1021/jo5010636

文献信息

• Palladium-Catalyzed Asymmetric Benzylic Alkylation of Active Methylene Compounds with α-Naphthylbenzyl Carbonates and Pivalates
  作者：Sho Tabuchi、Koji Hirano、Masahiro Miura

  DOI：10.1002/anie.201602075

  日期：2016.6.6

  Pd/(R)‐H8‐BINAP‐catalyzed asymmetric benzylic alkylation of active methylene compounds has been developed. The reaction proceeds without the use of an external base, and the starting racemic diarylmethyl carbonates are converted into the optically active coupling products which contain the benzylic chiral stereocenter by a dynamic kinetic asymmetric transformation (DYKAT). Additionally, with suitable

  已开发出Pd /（R）-H 8 -BINAP催化的活性亚甲基化合物的不对称苄基烷基化反应。反应在不使用外部碱的情况下进行，并且起始外消旋碳酸二芳基甲基碳酸酯通过动态动力学不对称转化（DYKAT）被转化为包含苄基手性立体中心的旋光偶联产物。另外，对于合适的碳酸盐碱，相同的钯催化作用允许在相同的DYKAT工艺中采用相应的新戊酸酯。