diethyl (2-methylbenzoyl)phosphonate | 56738-54-6

• 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: diethyl (2-methylbenzoyl)phosphonate
• 英文别名: (2-methyl-benzoyl)-phosphonic acid diethyl ester；(o-Methyl-Benzoyl)-phosphonic acid diethyl ester；diethoxyphosphoryl-(2-methylphenyl)methanone
• CAS: 56738-54-6
• 化学式: C₁₂H₁₇O₄P
• 分子量: 256.238
• InChiKey: OWGXWFLJRBMYGI-UHFFFAOYSA-N

物化性质

• 沸点：
  126-130 °C(Press: 1 Torr)
• 密度：
  1.145±0.06 g/cm3(Predicted)
• 保留指数：
  1711;1724

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  17
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  diethyl (2-methylbenzoyl)phosphonate 在 palladium on activated charcoal 氢气 作用下， 以 甲醇 为溶剂， 20.0 ℃ 、1.01 MPa 条件下， 反应 6.0h， 以100%的产率得到diethyl 1-hydroxy-1-(2-methylphenyl)ethylphosphonate
  参考文献：
  名称：

  Hydrogenation of α-oxophosphonates with molecular hydrogen catalyzed by palladium on carbon carrier as synthesis procedure for α-hydroxyphosphonates

  摘要：

  Hydrogenation with molecular hydrogen of substituted benzoylphosphonic acids ethyl esters provides a convenient preparation method for diethyl [hydroxy(aryl)methyl]phosphonates. Both the palladium on activated carbon and the palladium immobilized in a chitosan matrix applied on a carbon carrier sibunit can be employed as catalysts.

  DOI：

  10.1134/s1070428007080167
• 作为产物：
  描述：

  邻甲基苯甲酰氯 、 亚磷酸三乙酯 以 neat (no solvent) 为溶剂， 反应 3.0h， 以98%的产率得到diethyl (2-methylbenzoyl)phosphonate
  参考文献：
  名称：

  （邻烷基苯甲酰基）膦酸酯的光诱导环化为苯并环丁烯醇

  摘要：

  （o-烷基苯甲酰基）膦酸酯仅在紫外光照射下很容易环化成高度应变的苯并环丁烯醇。出色的效率归因于膦酸酯取代基的电子接受特性，该特性有助于邻喹二甲烷中间体热闭环并抑制向起始羰基化合物的转化。

  DOI：

  10.1002/asia.201700766

文献信息

• On the reaction of dialkyl acylphosphonate with 2-methylthiazolium salts.
  作者：AKIRA TAKAMIZAWA、YOSHIHIRO MATSUSHITA、HIROSHI HARADA

  DOI：10.1248/cpb.25.991

  日期：——

  Dialkyl acylphosphonate worked as an acylating agent on 2-methylthiazolium and thiazolinium salts in the presence of base, to give 2-acylidenethiazoline and thiazolidine derivatives, respectively. Dialkyl [1-aryl (alkyl)-1-dialkylphosphatomethyl] phosphonate was also isolated as a by-product in the same reaction. Dialkyl acylphosphonate afforded 2-acylidenethiazolines in better yield compared with acyl chlorides and showed on apparent affinity for carbanions. Application of diethyl benzoylphosphonate to 1, 2, 3-trimethylbenzimidazolium iodide, however, formed a dimeric salt, 1, 1', 3, 3'-tetramethyl-2, 2'-(2-phenyltrimethylene) di (benzimidazolium) diiodide in addition to 2-(1, 3-dimethylbenzimidazolin-2-ylidene) acetophenone. On the basis of the reactivity difference between the 2-methylthiazolium and 2-methylimidazolium salts and the kinetic experiments, the mechanism of the acylating reaction was proposed.

  二烷基酰基膦酸酯作为酰基化试剂，在碱存在下与2-甲基噻唑盐和噻唑啉盐反应，分别生成2-酰亚氨基噻唑啉和噻唑烷衍生物。同时，反应中还分离得到了副产物：二烷基[1-芳基（烷基）-1-二烷基膦甲基]膦酸酯。与酰氯相比，二烷基酰基膦酸酯在生成2-酰亚氨基噻唑啉时产率更高，并显示出对碳负离子的明显亲和性。然而，将二乙基苯甲酰膦酸酯应用于1,2,3-三甲基苯并咪唑盐碘时，除了生成2-(1,3-二甲基苯并咪唑啉-2-亚基)苯乙酮外，还形成了二聚盐：1,1',3,3'-四甲基-2,2'-(2-苯基亚丙基)二(苯并咪唑盐)二碘化物。基于2-甲基噻唑盐和2-甲基咪唑盐之间的反应活性差异及动力学实验，提出了酰基化反应的机理。
• Synthesis of Acylphosphonates by a Palladium-Catalyzed Phosphonocarbonylation Reaction of Aryl Iodides with Phosphites
  作者：Yusuke Masuda、Naoki Ishida、Masahiro Murakami

  DOI：10.1002/asia.201403260

  日期：2015.2

  Acylphosphonates are conveniently synthesized from aryl iodides by a palladium‐catalyzed reaction with dialkyl phosphites under an atmospheric pressure of carbon monoxide. The reaction demonstrates the first example of the use of phosphorus nucleophiles in related metal‐catalyzed carbonylation reactions.

  在一氧化碳的大气压下，通过钯催化与亚磷酸二烷基酯的反应，可以由芳基碘化物方便地合成酰基膦酸酯。该反应证明了在相关的金属催化的羰基化反应中使用磷亲核试剂的第一个例子。
• Uncatalyzed Addition of TMSCN to Acylphosphonates
  作者：Ayhan Demir、Ömer Reis、Metin Kayalar、Serkan Eymur、Barbaros Reis

  DOI：10.1055/s-2006-951558

  日期：——

  The cyanosilylations of various alkyl- and arylphosphonates under comparatively mild conditions furnished the trimethylsilyloxycyanophosphonates in high yield. The addition to ketophosphonate functions works without the influence of a catalyst.

  在相对温和的条件下，对各种烷基和芳基磷酸酯进行氰基硅醇化反应，得到了高产率的三甲基硅氧基氰基磷酸酯。对酮磷酸酯功能的加成在没有催化剂的影响下进行。
• Catalytic, Asymmetric Synthesis of Phosphonic γ-(Hydroxyalkyl)butenolides with Contiguous Quaternary and Tertiary Stereogenic Centers
  作者：Marcus Frings、Isabelle Thomé、Ingo Schiffers、Fangfang Pan、Carsten Bolm

  DOI：10.1002/chem.201304331

  日期：2014.2.3

  yielding access to phosphonic γ‐(hydroxyalkyl)butenolides with excellent regio‐, diastereo‐ and enantiocontrol is reported. The simultaneous construction of up to two adjacent quaternary stereogenic centers by a catalytic asymmetric vinylogous Mukaiyama aldol reaction unites biologically and medicinally relevant entities, namely α‐hydroxy phosphonates and γ‐(hydroxyalkyl)butenolides. This is achieved by

  据报道，该方法可高收率地获得具有出色的区域，非对映和对映体控制能力的膦酸γ-（羟烷基）丁烯内酯。催化不对称乙烯基Mukaiyama aldol反应最多可同时构建两个相邻的四级立体异构中心，这些结构在生物学和医学上相关的实体，即α-羟基膦酸酯和γ-（羟烷基）丁烯醇内酯。这是通过利用易于获得的手性铜-亚磺酰亚胺催化剂对亲电子和亲核反应物表现出宽泛的官能团耐受性来实现的。还包括对影响观察到的对映选择性水平的潜在因素的讨论，对映选择性水平来自对映纯的亚砜亚胺配体。
• Enantio- and Diastereoselective Vinylogous Mukaiyama Aldol Reactions of α-Keto Phosphonates with 2-(Trimethylsilyloxy)- furan Catalyzed by Bis(oxazoline)-Copper Complexes
  作者：Gang Hou、Jipan Yu、Chengbin Yu、Guiping Wu、Zhiwei Miao

  DOI：10.1002/adsc.201200810

  日期：2013.1.9

  The asymmetric vinylogous Mukaiyama aldol reaction between α-keto phosphonate and 2-(trimethylsilyloxy)furan was performed by using bis(oxazoline)-copper complexes as the catalyst and 2,2,2-trifluoroethanol as additive in dichloromethane. The present method is highly tolerable for functionalized α-keto phosphonates and enabled us to obtain the corresponding 3- and 4-substituted benzyl-functionalized

  以双（恶唑啉）-铜络合物为催化剂，以2,2,2-三氟乙醇为添加剂，在二氯甲烷中进行α-酮膦酸酯与2-（三甲基甲硅烷氧基）呋喃的不对称乙烯基Mukaiyama aldol反应。本方法对官能化的α-酮膦酸酯具有很高的耐受性，使我们能够以高收率（高达86％）和高对映体选择性（高达90％）获得相应的3-和4-取代的苄基官能化的叔α-羟基膦酸酯。 98％ee）和非对映选择性（最高达99：1，抗选择性）。