Dibutylbis(3-methylphenyl)stannane

• 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: Dibutylbis(3-methylphenyl)stannane
• 英文别名: dibutyl-bis(3-methylphenyl)stannane
• 化学式: C₂₂H₃₂Sn
• 分子量: 415.206
• InChiKey: HYECVWLUKFXKKS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.47
• 重原子数：
  23.0
• 可旋转键数：
  8.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  0.0
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  Dibutylbis(3-methylphenyl)stannane 在 水 作用下， 以 氯苯 为溶剂， 反应 23.0h， 生成 间甲苯磺胺
  参考文献：
  名称：

  Tin for organic synthesis. 10. Unconventional regiospecific syntheses of aromatic carbonamides and thiocarbonamides by means of tin-mediated Friedel-Crafts reactions

  摘要：

  Friedel-Crafts reactions of stannylarenes 1 with tosyl isocyanate (TsNCO, 2) give N-tosylcarbonamides 3 via ipso substitution of the stannyl group. Thus, unconventionally substituted aromatic carbonamides can be obtained. The combination of the reaction of 1 and 2 with that of 1 and chlorosulfonyl isocyanate (14) allows one-pot syntheses of N-(arylsulfonyl)-substituted aromatic carbonamides with optional substitution patterns on both aromatic rings. The known ipso-specific substitutions of stannylarenes with 14 are extended to bi- and tricyclic arenes as well as to thiophenes 6 and 22. One stannyl group can serve as a leaving group for two aromatic systems, as shown with diaryldialkyltins 29. Also, stannylalkanes such as 27 react with 14 to afford alkylsulfonyl isocyanates and products of further reactions, such as 28. From the reactions of 1 with ethoxycarbonyl isothiocyanate (32), ortho- and meta-substituted aromatic thiocarbonamides 33 which are potential precursors for further syntheses, are accessible. The scope, limitations, and mechanism of these electrophilic substitutions are outlined.

  DOI：

  10.1021/jo00077a020

文献信息

• Tin for Organic Synthesis, 14. Synthesis of Aromatic and α,β‐Unsaturated Aldehydes by a Friedel‐Crafts‐like Electrophilic Destannylation Using 1,1‐Dichloromethyl Methyl Ether
  作者：Michael Niestroj、Wilhelm P. Neumann†

  DOI：10.1002/cber.19961290111

  日期：1996.1

  for the preparation of a variety of aromatic (7a–m), heteroaromatic (7n–r), and α,β-unsaturated aldehydes (8a–f) is described. The reaction of trialkylaryl- (2a–o), heteroaryl- (2p–t), and 1-alkenylstannanes (4a–f and 5a–f) with dichloromethyl methyl ether (1, DCME) in the presence of aluminium trichloride followed by hydrolysis provides the corresponding aldehydes. In the case of arylstannanes the ipso-isomers

  描述了一种温和有效的方法，用于制备各种芳族化合物（7a–m），杂芳族化合物（7n–r）和α，β-不饱和醛（8a–f）。在三氯化铝存在下，三烷基芳基-（2a-o），杂芳基-（2p-t）和1-烯基锡烷（4a-f和5a-f）与二氯甲基甲基醚（1，DCME）反应，然后水解提供相应的醛。在arylstannanes的情况下，本位-异构体通常形成; 所述p -alde-海兹发生作为副产物。1-烯基锡烷的亲电取代为1会以ipso和立体定向方式生成α，β-不饱和醛。苯乙烯基和甲硅烷基的离去能力的比较表明，甲硅烷基取代的化合物6a-c对亲电子试剂1的反应性较低，甚至为零。在甲硅烷基锡烯基烯6c中，只有锡烷基反应，而锡11的功能在产物醛11中保持不受影响。
• Indium-mediated regioselective synthesis of ketones from arylstannanes under solvent-free ultrasound irradiation
  作者：Marcos J. Lo Fiego、Mercedes A. Badajoz、Claudia Domini、Alicia B. Chopa、María T. Lockhart

  DOI：10.1016/j.ultsonch.2012.10.018

  日期：2013.5

  drastically reduced (from 3-32h to 10-70min) under ultrasonic irradiation. Evidences for the involvement of a homolytic aromatic ipso-substitution mechanism, in which indium metal acts as radical initiator, are presented. It is possible the transference of two aryl groups from tin, thus improving effective mass yield, working with diarylstannanes as starting substrates.

  烷酰氯与空间和电子异构芳基锡的无溶剂铟促进反应是一种简单直接的方法，可以在温和的条件下良好地分离出高，极好的分离产率（42-84％）的伯，仲和叔烷基芳基酮和中立的条件。该方案对于合成芳基乙烯基酮也是足够的。在超声波照射下，反应时间大大减少（从3-32h减少到10-70min）。证据表明，其中均以铟金属为自由基引发剂的均质芳香族介孔取代机制参与其中。使用二芳基锡烷作为起始底物，可以从锡上转移两个芳基，从而提高有效的质量收率。
• Tin for organic synthesis. 10. Unconventional regiospecific syntheses of aromatic carbonamides and thiocarbonamides by means of tin-mediated Friedel-Crafts reactions
  作者：Martin Arnswald、Wilhelm P. Neumann

  DOI：10.1021/jo00077a020

  日期：1993.12

  Friedel-Crafts reactions of stannylarenes 1 with tosyl isocyanate (TsNCO, 2) give N-tosylcarbonamides 3 via ipso substitution of the stannyl group. Thus, unconventionally substituted aromatic carbonamides can be obtained. The combination of the reaction of 1 and 2 with that of 1 and chlorosulfonyl isocyanate (14) allows one-pot syntheses of N-(arylsulfonyl)-substituted aromatic carbonamides with optional substitution patterns on both aromatic rings. The known ipso-specific substitutions of stannylarenes with 14 are extended to bi- and tricyclic arenes as well as to thiophenes 6 and 22. One stannyl group can serve as a leaving group for two aromatic systems, as shown with diaryldialkyltins 29. Also, stannylalkanes such as 27 react with 14 to afford alkylsulfonyl isocyanates and products of further reactions, such as 28. From the reactions of 1 with ethoxycarbonyl isothiocyanate (32), ortho- and meta-substituted aromatic thiocarbonamides 33 which are potential precursors for further syntheses, are accessible. The scope, limitations, and mechanism of these electrophilic substitutions are outlined.