methyl 4-({[tert-butyl(diphenyl)silyl]oxy}methyl)benzoate | 171243-35-9

• 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: methyl 4-({[tert-butyl(diphenyl)silyl]oxy}methyl)benzoate
• 英文别名: Methyl 4-[[tert-butyl(diphenyl)silyl]oxymethyl]benzoate
• CAS: 171243-35-9
• 化学式: C₂₅H₂₈O₃Si
• 分子量: 404.581
• InChiKey: DJFMIUOXDHRXBA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.55
• 重原子数：
  29
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  methyl 4-({[tert-butyl(diphenyl)silyl]oxy}methyl)benzoate 在 吡啶 、 四丁基氟化铵 、 caesium carbonate 作用下， 以 四氢呋喃 为溶剂， 生成 Benzoic acid 1-methyl-1-[4-(2,2,2-trichloro-acetimidoyloxymethyl)-phenyl]-ethyl ester
  参考文献：
  名称：

  Acyl Transfer as a Problematic Side Reaction in Polymer-Supported Oligosaccharide Synthesis

  摘要：

  Under a wide variety of glycosylation conditions acyl transfer to the polymer support competed with glycoside formation, including the pivaloyl protecting group. As well as acyl transfer, many glycosylations also led to the formation of polymer-bound beta-1,2-linked oligomers of the donor. Using ethyl 2,6-di-O-pivaloyl-3,w4-O-isopropylidene-beta-D-galactothiopyranoside as donor under promotion of N-iodosuccinimide/silver trifluoromethanesulfonate in the presence of 2-methyl-2-butene, an 82% yield of glycoside was obtained along with pivaloylated polymer. Subsequent work showed that increasing the steric bulk about the alcoholic acceptor in conjunction with this 2-O-pivaloyl-protected glycosyl donor completely suppresses this side reaction, giving a nearly quantitative yield of glycoside. This contraintuitive approach of decreasing the reactivity of both the donor and the acceptor to minimize a side reaction is rationalized by assuming that the barrier to acyl transfer is more sensitive to the protecting groups than that of glycosylation. These developments led to a polymer-supported synthesis of the branch point trisaccharide of the group B type 1A Streptococcus capsular polysaccharide.

  DOI：

  10.1021/jo990712b
• 作为产物：
  描述：

  4-(羟甲基)苯甲酸甲酯 、 叔丁基二苯基氯硅烷 在 咪唑 作用下， 以 四氢呋喃 为溶剂， 生成 methyl 4-({[tert-butyl(diphenyl)silyl]oxy}methyl)benzoate
  参考文献：
  名称：

  发现新型基于噻吩并[2,3 - d ]嘧啶-4-基的Cyclin D1-CDK4抑制剂：合成，生物学评估和结构-活性关系。第2部分

  摘要：

  描述，设计和合成新型噻吩并[2,3 - d ]嘧啶-4-基类似物作为细胞周期蛋白依赖性激酶4（CDK4）抑制剂。重点研究the上带有取代苯基，4-[（（甲基氨基）甲基]苯甲醛（22）和5-异二氢吲哚甲醛（24）（6-叔丁基硫代[2,3- d ]嘧啶-已经鉴定出4-基）hydr衍生物。在本文中，讨论了我们合成化合物的效价，选择性和结构活性关系。

  DOI：

  10.1016/j.bmc.2009.10.039

文献信息

• Diverse Site-Selective Transformation of Benzylic and Allylic Silyl Ethers via Organocatalytic Oxidation
  作者：Shohei Hamada、Kaori Sakamoto、Eri Miyazaki、Elghareeb E. Elboray、Yusuke Kobayashi、Takumi Furuta

  DOI：10.1021/acscatal.3c01153

  日期：2023.6.16

  the electronic properties of silyl ethers, thus enabling selective oxidation of benzylic and allylic silyl ethers, despite steric factors. A subsequent one-pot reduction accomplishes the formal deprotection to the corresponding benzylic and allylic alcohols. This catalytic system allows the direct oxidative desymmetrization of bis-benzylic and bis-allylic silyl ethers to access synthetically useful

  我们在此报告了硝酰自由基催化剂1a，它识别甲硅烷基醚的电子特性，从而能够选择性氧化苄基和烯丙基甲硅烷基醚，尽管存在空间因素。随后的一锅还原完成了相应苯甲醇和烯丙醇的正式脱保护。该催化系统允许双苄基和双烯丙基甲硅烷基醚直接氧化去对称，以获得合成上有用的单保护共轭醛，其可应用于一锅对映选择性转化。机理研究表明， 1a中的高电子接受性氧铵物质以及三氟乙酸盐形式的苯基碘鎓双(三氟乙酸盐) (PIFA) 在决定选择性的氢化物转移步骤中发挥着关键作用。
• Nicolaou, K. C.; Koide, Kazunori; Bunnage, Mark E., Chemistry - A European Journal, 1995, vol. 1, # 7, p. 454 - 466
  作者：Nicolaou, K. C.、Koide, Kazunori、Bunnage, Mark E.

  DOI：——

  日期：——
• Discovery of novel thieno[2,3-d]pyrimidin-4-yl hydrazone-based inhibitors of Cyclin D1-CDK4: Synthesis, biological evaluation and structure–activity relationships. Part 2
  作者：Takao Horiuchi、Motoko Nagata、Mayumi Kitagawa、Kouichi Akahane、Kouichi Uoto

  DOI：10.1016/j.bmc.2009.10.039

  日期：2009.12

  The design, synthesis and evaluation of novel thieno[2,3-d]pyrimidin-4-yl hydrazone analogues as cyclin-dependent kinase 4 (CDK4) inhibitor are described. Focusing on the optimization of the heteroaryl moiety at the hydrazone with substituted phenyl groups, 4-[(methylamino)methyl]benzaldehyde (22) and 5-isoindolinecarbaldehyde (24) (6-tert-butylthieno[2,3-d]pyrimidin-4-yl)hydrazone derivatives have

  描述，设计和合成新型噻吩并[2,3 - d ]嘧啶-4-基类似物作为细胞周期蛋白依赖性激酶4（CDK4）抑制剂。重点研究the上带有取代苯基，4-[（（甲基氨基）甲基]苯甲醛（22）和5-异二氢吲哚甲醛（24）（6-叔丁基硫代[2,3- d ]嘧啶-已经鉴定出4-基）hydr衍生物。在本文中，讨论了我们合成化合物的效价，选择性和结构活性关系。
• Acyl Transfer as a Problematic Side Reaction in Polymer-Supported Oligosaccharide Synthesis
  作者：Tomoo Nukada、Attila Berces、Dennis M. Whitfield

  DOI：10.1021/jo990712b

  日期：1999.12.1

  Under a wide variety of glycosylation conditions acyl transfer to the polymer support competed with glycoside formation, including the pivaloyl protecting group. As well as acyl transfer, many glycosylations also led to the formation of polymer-bound beta-1,2-linked oligomers of the donor. Using ethyl 2,6-di-O-pivaloyl-3,w4-O-isopropylidene-beta-D-galactothiopyranoside as donor under promotion of N-iodosuccinimide/silver trifluoromethanesulfonate in the presence of 2-methyl-2-butene, an 82% yield of glycoside was obtained along with pivaloylated polymer. Subsequent work showed that increasing the steric bulk about the alcoholic acceptor in conjunction with this 2-O-pivaloyl-protected glycosyl donor completely suppresses this side reaction, giving a nearly quantitative yield of glycoside. This contraintuitive approach of decreasing the reactivity of both the donor and the acceptor to minimize a side reaction is rationalized by assuming that the barrier to acyl transfer is more sensitive to the protecting groups than that of glycosylation. These developments led to a polymer-supported synthesis of the branch point trisaccharide of the group B type 1A Streptococcus capsular polysaccharide.