ethyl 4-methyl-6-phenyl-2-(p-tolyl)pyrimidine-5-carboxylate | 1048007-29-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: ethyl 4-methyl-6-phenyl-2-(p-tolyl)pyrimidine-5-carboxylate
• 英文别名: Ethyl 4-methyl-2-(4-methylphenyl)-6-phenylpyrimidine-5-carboxylate
• CAS: 1048007-29-9
• 化学式: C₂₁H₂₀N₂O₂
• 分子量: 332.402
• InChiKey: XGQGZAHRDGDIKI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  25
• 可旋转键数：
  5
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  52.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  6-甲基-4-苯基-2-硫代-1,2,3,4-四氢嘧啶-5-羧酸乙酯 在 potassium phosphate 、 四(三苯基膦)钯 、 噻吩-2-甲酸亚铜(I) 、 2,3-二氯-5,6-二氰基-1,4-苯醌 作用下， 以 1,4-二氧六环 、 二氯甲烷 为溶剂， 反应 18.0h， 生成 ethyl 4-methyl-6-phenyl-2-(p-tolyl)pyrimidine-5-carboxylate
  参考文献：
  名称：

  化学选择性碳-碳交叉偶联通过二硫键钯催化铜介导的CS切割

  摘要：

  AbstractAn efficient method for carbon‐carbon bond formation is described. The process employs the palladium‐catalyzed copper‐mediated cross‐coupling of diheteroaryl disulfides with arylboronic acids or alkynes to deliver CC coupling products through unreactive CS bond cleavage. The scope of the coupling reactions, including both the disulfides and arylboronic acids or alkynes, are documented.magnified image

  DOI：

  10.1002/adsc.201300776

文献信息

• Palladium-Catalyzed Copper-Promoted Hiyama-Type Carbon–­Carbon Cross-Coupling Reactions of Dihetaryl Disulfides as ­Electrophiles
  作者：Zheng-Jun Quan、Xi-Cun Wang、Ming-Xia Liu、Hai-Peng Gong

  DOI：10.1055/s-0036-1589116

  日期：2018.2

  Dihetaryl disulfides were used as electrophiles in a palladium-catalyzed carbon–carbon cross-coupling reaction with arylsilanes to ­realize a Hiyama-type reaction. This unique transformation shows high reactivity, excellent functional-group tolerance, and mild reaction conditions, making it an attractive alternative to conventional cross-coupling approaches for carbon−carbon bond construction.

  二杂芳基二硫化物在钯催化的碳-碳交叉偶联反应中与芳基硅烷用作亲电试剂以实现 Hiyama 型反应。这种独特的转变显示出高反应性、优异的官能团耐受性和温和的反应条件，使其成为传统的碳-碳键构建交叉偶联方法的有吸引力的替代方法。
• Dehydrosulfurative arylation with concomitant oxidative dehydrogenation for rapid access to pyrimidine derivatives
  作者：Hyeji Kim、Nguyen Huu Trong Phan、Hyunik Shin、Hee-Seung Lee、Jeong-Hun Sohn

  DOI：10.1016/j.tet.2017.10.010

  日期：2017.11

  This report describes a cascade reaction method for the synthesis of 2-arylpyrimidine derivatives via dehydrosulfurative carbon-carbon cross-coupling and concomitant oxidative dehydrogenation under a Pd/Cu catalytic system. It provides rapid and general access to a diverse range of 2-arylpyrimidines in a single step from a wide range of 3,4-dihydropyrimidin-1H-2-thiones (DHPMs) and arylboronic acids

  该报告描述了在Pd / Cu催化体系下通过脱氢硫化碳-碳交叉偶联和伴随的氧化脱氢合成2-芳基嘧啶衍生物的级联反应方法。它可从一个范围广泛的3,4-二氢嘧啶-1 H -2-硫酮（DHPM）和芳基硼酸一步一步快速，通用地获得各种2-芳基嘧啶。
• Chemo-Controlled Cross-Coupling of Di(hetero)aryl Disulfides with Grignard Reagents: CC<i>vs.</i>CS Bond Formation
  作者：Bao-Xin Du、Zheng-Jun Quan、Yu-Xia Da、Zhang Zhang、Xi-Cun Wang

  DOI：10.1002/adsc.201400980

  日期：2015.4.13

  A general protocol for the chemoselectivity‐controlled CC and CS coupling reactions of di(hetero)aryl disulfides with Grignard reagents catalyzed by ferrocene and palladium acetate has been developed. Ferrocene favored the formation of CS coupled products at low temperature, whereas CC bond couplings were favored when palladium acetate was used. All the reactions proceeded with excellent chemoselectivity

  已开发了二（杂）芳基二硫化物与二茂铁和乙酸钯催化的格氏试剂的化学选择性控制的CC和CS偶联反应的通用方案。二茂铁有利于在低温下形成CS偶联产物，而当使用乙酸钯时则有利于CC键偶联。在温和的条件下，所有反应均以优异的化学选择性和良好的收率进行，并产生了具有吡啶和嘧啶支架的分子库。
• Iron-catalyzed cross-coupling of heteroaromatic tosylates with alkyl and aryl Grignard reagents
  作者：Xu Chen、Zheng-Jun Quan、Xi-Cun Wang

  DOI：10.1002/aoc.3289

  日期：2015.5

  An Fe(III)‐catalyzed cross‐coupling of N‐heteroaromatic tosylates with aryl and alkyl Grignard reagents is presented. The reaction proceeds at −20°C to room temperature with short reaction time (15–30 min.), and the corresponding products are obtained with moderate to high yields. In particular, low‐cost and abundantly available FeCl3 or Fe(acetylacetonate)3 catalyze the reaction without other special

  本文介绍了Fe（III）催化的N-杂芳族甲苯磺酸酯与芳基和烷基格氏试剂的交叉偶联。反应在-20°C到室温的条件下以较短的反应时间（15-30分钟）进行，并以中等至高收率获得了相应的产物。尤其是低成本且大量可用的FeCl 3或Fe（乙酰丙酮化物）3可以催化反应，而无需其他特殊配体。所有可用的测试过的N-杂芳族甲苯磺酸盐（包括吡啶和嘧啶衍生物）都经过反应，生成了预期的产物。版权所有©2015 John Wiley＆Sons，Ltd.
• Palladium(II) Catalyzed Suzuki/Sonogashira Cross-Coupling Reactions of Sulfonates: An Efficient Approach to C2-Functionalized Pyrimidines and Pyridines
  作者：Zheng-Jun Quan、Fu-Qiang Jing、Zhang Zhang、Yu-Xia Da、Xi-Cun Wang

  DOI：10.1002/ejoc.201300592

  日期：2013.11

  Pyrimidin-2-yl sulfonates, as a reaction partner, can be easily prepared from inexpensive commercial materials and are efficiently cross-coupled with arylboronic acids and terminal alkynes by using Pd(OAc)2-catalyzed Suzuki and Sonogashira reactions. A wide array of C2-functionalized pyrimidines have been prepared in good to excellent yields. 2-Arylpyridines and 2-(oct-1-ynyl)pyridine were also synthesized

  嘧啶-2-基磺酸盐作为反应伙伴，可以从廉价的商业材料中轻松制备，并通过使用 Pd(OAc)2 催化的 Suzuki 和 Sonogashira 反应与芳基硼酸和末端炔烃有效交叉偶联。大量 C2 官能化的嘧啶已经以良好到极好的产率制备。还合成了 2-芳基吡啶和 2-(oct-1-ynyl) 吡啶。