3-benzhydryl-pentane-2,4-dione | 19672-37-8

• 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: 3-benzhydryl-pentane-2,4-dione
• 英文别名: 3-(diphenylmethyl)pentane-2,4-dione；3-(Diphenylmethyl)-2,4-pentandion；3-(diphenylmethyl)-2,4-pentanedione；3-Benzhydryl-2,4-pentanedione；3-benzhydrylpentane-2,4-dione
• CAS: 19672-37-8
• 化学式: C₁₈H₁₈O₂
• 分子量: 266.34
• InChiKey: KIIKSWKBDKWIAT-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.2
• 重原子数：
  20
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  34.1
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-benzhydryl-pentane-2,4-dione 在 silica sulfuric acid 作用下， 以 1,2-二氯乙烷 为溶剂， 反应 1.0h， 以49%的产率得到3-bromo-4,4-diphenylbutane-2-one
  参考文献：
  名称：

  Simple Method for sp2–sp3 and sp3–sp3 Carbon–Carbon Bond Activation in 2-Substituted 1,3-Diketones

  摘要：

  Simple and efficient methods were developed for sp(2)-sp(3) and sp(3)-sp(3) C-C bond-activation reactions of 2-substituted 1,3-diketones. 3-Substituted 3-bromopentane-2,4-diones were deacylated in the presence of an aromatic compound and a silica gel supported Bronsted acid containing sulfonic groups. The carbocation formed by cleavage of the sp(3)-sp(3) C-C bond of the dione alkylated the aromatic compound.

  DOI：

  10.1055/s-0034-1378862
• 作为产物：
  描述：

  N-benzhydryl-N,4-dimethylbenzenesulfonamide 、 乙酰丙酮 在 ytterbium(III) triflate 作用下， 以 硝基甲烷 为溶剂， 反应 24.0h， 以99%的产率得到3-benzhydryl-pentane-2,4-dione
  参考文献：
  名称：

  Yb(OTf)3-promoted effective benzylation and allylation with N-tosyl amino group as a stable leaving group

  摘要：

  A simple, inexpensive, environmentally friendly, and highly efficient benzylation and allylation of 1,3-dicarbonyl compounds with sulfonamides in the presence of Yb(OTf)(3) is described. Yb(OTf)(3) was proved to be a good catalyst for the cleavage of sp(3) carbon-nitrogen bond. Various 1,3-dicarbonyl compounds can couple with a broad range of tosyl-activated benzylic and allylic amines to give diversely functionalized products in good to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2012.01.141

文献信息

• H5CoW12O40 supported on nano silica from rice husk ash: A green bifunctional catalyst for the reaction of alcohols with cyclic and acyclic 1,3-dicarbonyl compounds
  作者：Ezzat Rafiee、Maryam Khodayari、Masoud Kahrizi、Reza Tayebee

  DOI：10.1016/j.molcata.2012.03.005

  日期：2012.6

  abundant agricultural by-product. The present research work deals with the production of nano silica powders, with high surface area and in amorphous form, from RHA using optimized technique. 12-Tungestocobaltic acid, H5CoW12O40 (CoW), was supported on silica from RHA to produce silica supported CoW (CoW/NSiO2) as a nano catalyst. The characterization data derived from FT-IR reveal that the Keggin structure

  稻壳灰（RHA）是一种丰富的农业副产品。本研究工作涉及使用优化技术从RHA生产高表面积和无定形形式的纳米二氧化硅粉末。由RHA将12-钨钴酸H 5 CoW 12 O 40（CoW）负载在二氧化硅上，以制备作为纳米催化剂的二氧化硅负载的CoW（CoW / NSiO 2）。从FT-IR得出的表征数据表明，CoW的Keggin结构在CoW / NSiO 2中保持完整。TEM图像显示该催化剂为球形，平均粒径为10nm。催化剂的酸度通过电位滴定法用n-丁胺。令我们惊讶的是，这种非常强固的固体酸催化剂显示出极好的酸位分布，这表明该催化剂与负载在商业二氧化硅上的CoW（CoW / SiO 2），CoW和K 5 CoW 12相比，具有更高的表面活性位。O 40。发现在CoW / NSiO 2上具有高催化活性。最后，CoW / NSiO 2用作将线性1,3-二羰基化合物与苄醇进行苄基化反应和由环状1,3-二
• A simple and efficient FeCl3-catalyzed direct alkylation of active methylene compounds with benzylic and allylic alcohols under mild conditions
  作者：Umasish Jana、Srijit Biswas、Sukhendu Maiti

  DOI：10.1016/j.tetlet.2007.04.017

  日期：2007.6

  A highly efficient FeCl3-catalyzed alkylation of various active methylene compounds with various benzylic or allylic alcohols under mild conditions has been developed. The reaction was carried out in the presence of a catalytic amount of anhydrous FeCl3 (10 mol %) under reflux in methylene chloride. High to excellent yields were obtained.

  已经开发了在温和条件下用各种苄基或烯丙基醇高效催化FeCl 3催化的各种活性亚甲基化合物的烷基化反应。该反应在催化量的无水FeCl 3（10mol％）的存在下在二氯甲烷中回流下进行。获得了高到优异的产率。
• Different products in the reaction of the alcohols with cyclic and acyclic 1,3-dicarbonyl compounds: K5CoW12O40 as an electron transfer nano catalyst
  作者：Ezzat Rafiee、Masoud Kahrizi、Mohammad Joshaghani

  DOI：10.1016/j.cclet.2012.10.011

  日期：2012.12

  benzylation of 1,3-dicarbonyl compounds. β-Keto enol ethers were obtained when cyclic 1,3-dicarbonyl compounds used in this conditions instead of linear ones. The present methodology offers a practical, simple, mild, environmentally friendly, and time-saving method for etherification. Very low loading of catalyst, ease of workup, ease of handling, and reusability of catalyst are other advantages of

  摘要K5CoW12O40被用作1,3-二羰基化合物苄基化的高效催化剂。当在这种条件下使用环状1,3-二羰基化合物代替线性化合物时，可获得β-酮烯醇醚。本方法提供了一种实用，简单，温和，环保且省时的醚化方法。催化剂的极低负载，易于后处理，易于处理以及催化剂的可重复使用性是该催化剂的其他优点。
• Amberlyst-15® in ionic liquid: an efficient and recyclable reagent for the benzylation and hydroalkylation of β-dicarbonyl compounds
  作者：Ziyauddin S. Qureshi、Krishna M. Deshmukh、Pawan J. Tambade、Bhalchandra M. Bhanage

  DOI：10.1016/j.tetlet.2009.11.122

  日期：2010.1

  Benzylation and hydroalkylation of 1,3-dicarbonyl compounds using Amberlyst-15 immobilized in ionic liquid [Bmim][PF6] as an efficient reusable reagent was studied. The reagent was compared with other solid acid reagents along with role of the ionic liquid. The effect of various reaction parameters like type of reagent, solvent, substrate molar ratio, reaction time, and temperature were studied. Present

  以固定在离子液体[Bmim] [PF 6 ]中的Amberlyst-15为有效的可重复使用试剂，研究了1,3-二羰基化合物的苯甲酸酯化和加氢烷基化。将该试剂与其他固体酸试剂以及离子液体的作用进行了比较。研究了试剂类型，溶剂，底物摩尔比，反应时间和温度等各种反应参数的影响。由于易于处理试剂，简单的后处理程序，经济和环境友好的方法，因此本方案是有利的。获得的产品具有良好的优良收率，并适用于多种基材。
• ALKYLATION OF ACTIVE HYDROGEN COMPOUNDS WITH ALLYLIC AND BENZYLIC ALCOHOLS UNDER CoCl₂CATALYSIS. A USEFUL SYNTHESIS OF GRIFOLIN
  作者：J. Marquet、M. Moreno-Mañas

  DOI：10.1246/cl.1981.173

  日期：1981.2.5

  COCl2 is a useful catalyst for the condensation of allylic and benzylic alcohols with active hydrogen compounds. Under these neutral conditions orcinol and farnesol react to afford the antibiotic grifolin.

  COCl2 是烯丙醇和苄醇与活性氢化合物缩合的有用催化剂。在这些中性条件下，orcinol 和法尼醇反应生成抗生素 grifolin。