methyl 4-bromo-2,2-dimethyl-3-oxobutanoate | 84691-57-6

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 酮酸及其衍生物
• 英文名称: methyl 4-bromo-2,2-dimethyl-3-oxobutanoate
• CAS: 84691-57-6
• 化学式: C₇H₁₁BrO₃
• mdl: MFCD16620955
• 分子量: 223.067
• InChiKey: NPNKYOWEYMYAHO-UHFFFAOYSA-N

物化性质

• 沸点：
  235.8±15.0 °C(Predicted)
• 密度：
  1.412±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.714
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  3

安全信息

• 海关编码：
  2918300090

反应信息

• 作为反应物：
  描述：

  methyl 4-bromo-2,2-dimethyl-3-oxobutanoate 在 四(三苯基膦)钯 、 四丁基氟化铵 、 sodium hydride 、 potassium carbonate 作用下， 以 四氢呋喃 、 1,2-二氯乙烷 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 6.5h， 生成 2-(1-methyl-1-methoxycarbonylethyl)-6-(3-methoxyphenyl)-7-methyl-8-(2-fluorobenzyl)imidazolo[1,2-a]pyrimid-5-one
  参考文献：
  名称：

  Design and Structure−Activity Relationships of 2-Alkyl-3-aminomethyl-6-(3-methoxyphenyl)-7-methyl-8-(2-fluorobenzyl)imidazolo[1,2-a]pyrimid-5-ones as Potent GnRH Receptor Antagonists

  摘要：

  SAR studies of 7-phenylpyrrolo[1,2-a]pyrimid-4-ones 1 and 2, and 2-phenylimidazolo[1,2-a]-pyrimidines 3 and 4, as nonpeptide human GnRH receptor antagonists, lead us to believe that the aromatic ring at position-2 of 4 is no longer crucial for the binding once an aryl group is incorporated at postion-6. We report here the use of a 2-alkyl group on the imidazolo[1,2-a]-pyrimidone core to generate potent GnRH receptor antagonists. This discovery enabled us to obtain smaller but equally potent GnRH receptor antagonists.

  DOI：

  10.1021/jm0205402
• 作为产物：
  描述：

  2,2-二甲基乙酰乙酸甲酯 在 copper(I) bromide 作用下， 以 乙酸乙酯 为溶剂， 生成 methyl 4-bromo-2,2-dimethyl-3-oxobutanoate
  参考文献：
  名称：

  Novel Isoxazolinyl Spiropyrrolidinediones: 1,3-Dipolar Cycloaddition of 1-Benzyl-3,3-dimethyl-5-methylenepyrrolidin-2,4-dione

  摘要：

  提出了一种简单且高效的方法，用于从酮酸酯合成异噁唑啉基螺吡咯烷二酮。

  DOI：

  10.1055/s-0030-1259926

文献信息

• Synthesis of ( <i>Z</i> )‐β‐(Carbonylamino)alkenylindium through Regioselective <i>anti</i> ‐Carboindation of Ynamides and Its Transformation to Multisubstituted Enamides
  作者：Kyoungmin Kang、Kosuke Sakamoto、Yoshihiro Nishimoto、Makoto Yasuda

  DOI：10.1002/chem.201905175

  日期：2020.4.16

  an anti-addition, which was supported by DFT calculations. The scope of substrates included various ynamides and silylated nucleophiles, such as silyl ketene acetals and silyl ketene imines. The transformation of synthesized alkenylindiums by iodination, radical coupling, and Pd-catalyzed cross-coupling successfully afforded trisubstituted enamines with high regio- and stereoselectivities.

  通过使用InBr3和甲硅烷基化的亲核试剂，对酰胺类进行了区域选择性的抗碳氢化作用，从而合成了（Z）-β-（羰基氨基）烯基铟。烯基铟的X射线晶体分析表明该反应以抗加成方式进行。与报道的通过使用有机金属进行的酰胺酰胺的碳-羰基金属化相反，InBr3和甲硅烷基化的亲核试剂与酰胺的协同作用实现了抗加成反应，这得到了DFT计算的支持。底物的范围包括各种乙酰胺和甲硅烷基化的亲核试剂，例如甲硅烷基烯酮缩醛和甲硅烷基烯酮亚胺。通过碘化，自由基偶联和Pd催化的交叉偶联对合成的烯基铟进行的转化成功地提供了具有高区域选择性和立体选择性的三取代烯胺。
• A biosynthetically inspired synthesis of (−)-berkelic acid and analogs
  作者：Christopher F. Bender、Christopher L. Paradise、Vincent M. Lynch、Francis K. Yoshimoto、Jef K. De Brabander

  DOI：10.1016/j.tet.2018.01.021

  日期：2018.3

  cycloaddition to deliver the tetracyclic core of berkelic acid. Our studies confirm that the original assigned berkelic acid structure is not stable and equilibrates into a mixture of 4 diastereomers, fully characterized by X-ray crystallography. In addition to berkelic acid, C22-epi-berkelic acid, and nor-berkelic acids, we synthesized C26-oxoberkelic acid analogs that were evaluated against human cancer cell

  我们描述了我们对（-）-伯酸和类似物的总合成和生物学评估的完整说明。我们描述了一种合成策略，该策略受到天然产物spicifernin和pulvilloric酸之间潜在的仿生结合的启发。定义最佳参数后，我们进行了一锅银介导的异色满乳糖醇的原位脱水，制成了pulvillorate甲酯，将spicifernin样炔醇进行了环异构化为相应的环外烯醇醚，随后进行了环加成反应，从而得到了铍酸。我们的研究证实，最初分配的铍酸结构不稳定，并且会平衡为4个非对映异构体的混合物，并通过X射线晶体学对其进行了充分表征。除了铍酸，C22-表-伯酸和也不-berkelic酸，我们合成了被针对人癌细胞系评价C26-oxoberkelic酸类似物。与报道的天然铍酸的数据相反，我们的合成材料和类似物被发现没有活性。
• IMIDAZO[1,2-A]PYRIDINYL DERIVATIVES AS IRAK4 INHIBITORS
  申请人：BIOGEN MA INC.

  公开号：US20220089592A1

  公开（公告）日：2022-03-24

  This invention relates to Imidazo[1,2-a]pyridinyl Derivatives of formula (I′), or pharmaceutically acceptable salts thereof, in which all of the variables are as defined in the specification, capable of modulating the activity of IRAK4. The invention further provides a method of manufacturing compounds of the invention, and methods for their therapeutic use. The invention further provides methods to their preparation, to their medical use, in particular to their use in the treatment and management of diseases or disorders including inflammatory disease, autoimmune disease, cancer, cardiovascular disease, a disease of the central nervous system, disease of the skin, an ophthalmic disease and condition, and a bone disease.

  这项发明涉及Imidazo[1,2-a]pyridinyl Derivatives的化合物（I′）或其药学上可接受的盐，其中所有变量如规范中所定义，能够调节IRAK4的活性。该发明进一步提供了一种制造该发明化合物的方法，以及它们在治疗中的方法。该发明还提供了它们的制备方法，医学用途，特别是在治疗和管理炎症性疾病、自身免疫疾病、癌症、心血管疾病、中枢神经系统疾病、皮肤疾病、眼科疾病和骨骼疾病等疾病或疾病的用途。
• Gonadotropin-releasing hormone receptor antagonists and methods relating thereto
  申请人：Neurocrine Biosciences, Inc.

  公开号：US06537998B1

  公开（公告）日：2003-03-25

  GnRH receptor antagonists are disclosed which have utility in the treatment of a variety of sex-hormone related conditions in both men and women. The compounds of this invention have the structure: wherein Ar, A, B, Q, R1, R2, R3a, R3b, R6, R7 and m are as defined herein, including stereoisomers, prodrugs and pharmaceutical acceptable salts thereof. Also disclosed are compositions containing a compound of this invention in combination with a pharmaceutically acceptable carrier, as well as methods relating to the use thereof for antagonizing gonadotropin-releasing hormone in a subject in need thereof.

  GnRH受体拮抗剂被披露出来，对男性和女性的各种与性激素相关的疾病具有治疗作用。本发明的化合物具有以下结构：其中Ar、A、B、Q、R1、R2、R3a、R3b、R6、R7和m的定义如本文所述，包括立体异构体、前药和其药用可接受盐。还披露了含有本发明化合物的组合物，与药用可接受载体结合，以及与其相关的用于拮抗需要者体内促性腺激素释放激素的方法。
• The reaction of dimethylketen with some acid halides
  作者：William T. Brady、Larry Smith

  DOI：10.1039/j39700002522

  日期：——

  The addition of several acid halides to dimethylketen to produce β-keto-acid halides is described. A correlation exists between the reactivity of the acid halide and the pKa of the acid from which the acid from which the acid halide is derived. Dimethylketen is more reactive than diphenyl- and phenylethyl-keten. This is not a general reaction of keten and acid halides.

  描述了向二甲基酮中添加几种酰卤以产生β-酮酰卤。酰卤的反应性与衍生出酰卤的酸的酸的p K a之间存在相关性。二甲基酮比二苯基酮和苯乙基酮更具反应性。这不是酮基和酰基卤的一般反应。