N-苄基-2-溴-2-甲基丙酰胺 | 60110-37-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: N-苄基-2-溴-2-甲基丙酰胺
• 英文名称: N-benzyl-α-bromoisobutyranilide
• 英文别名: N-benzyl-2-bromo-2-methylpropanamide；2-bromo-2-methyl-N-benzylpropanamide；α-bromo-N-benzylisobutyramide；2-bromo-N-benzyl-isobutyramide
• CAS: 60110-37-4
• 化学式: C₁₁H₁₄BrNO
• 分子量: 256.142
• InChiKey: GBWYPSSDQOXOFH-UHFFFAOYSA-N

物化性质

• 熔点：
  71-72 °C(Solv: ligroine (8032-32-4))
• 沸点：
  383.3±35.0 °C(Predicted)
• 密度：
  1.341±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.4
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  29.1
• 氢给体数：
  1
• 氢受体数：
  1

安全信息

• 海关编码：
  2924299090
• 危险性防范说明：
  P261,P305+P351+P338
• 危险性描述：
  H315,H319,H335
• 储存条件：
  存储条件：2-8℃，干燥处，密封保存。

反应信息

• 作为反应物：
  描述：

  N-苄基-2-溴-2-甲基丙酰胺 以 乙腈 为溶剂， 以12%的产率得到N-苄基甲基丙烯酰胺
  参考文献：
  名称：

  通过N-（2-卤代链烷酰基）取代的苯胺的自由基环化合成吲哚酮

  摘要：

  已经在各种条件下研究了1型N-（2-卤代链烷酰基）-取代的苯胺（苯胺）的自由基反应。在（2,2'-偶氮二（异丁腈）（AIBN）存在下，用Bu 3 SnH处理化合物1a - 1o，得到吲哚酮（吲哚）2a - 2o和还原产物5a - 5o的混合物（表1）相比之下，N-未取代的苯胺1p - 1s，1u和1v仅给出了相应的还原产物（表1）。用镍粉（表2）或Et 3 B（表3）处理1可获得相似的结果。具有较长N-（苯基烷基）链（例如6和7）的苯胺对自由基环化呈惰性，但N-苄基-2-溴-N，2-二甲基丙酰胺（6b）除外，后者在用镍粉处理后-PrOH，以低收率得到环化产物9b（表4）。在照射时，所述扩展苯胺6，7，10，和11仅产生相应的脱氢溴化产物（表5）。

  DOI：

  10.1002/hlca.200490294
• 作为产物：
  描述：

  N-苄基-2-甲基丙酰胺 以 N,N-二甲基甲酰胺 为溶剂， 生成 N-苄基-2-溴-2-甲基丙酰胺
  参考文献：
  名称：

  Electrochemical determination of the pKa of weak acids in N,N-dimethylformamide

  摘要：

  The electroreduction of NH-protic alpha-bromo amides in DMF generates an enolate-type base which undergoes a fast proton transfer from the parent compound (self-protonation), affording the corresponding reduced amide together with the conjugate base of the bromo amide. When an acid weaker than the bromo amide is added to the solution, a current increase in a potential region more negative than the main voltammetric reduction peak is observed under suitable conditions. The voltammetric pattern is in agreement with an unfavored protonation of the conjugate base of the starting compound by the added proton donor with regeneration of the electroactive bromo amide. The theoretical analysis of this reduction sequence has been carried out, and the voltammetric profiles have been simulated. Comparison of the experimental and simulated voltammetries led to the determination of the acidity difference, DELTA-pK(a), between the a-bromo amide and the added acid. For each alpha-bromo amide it was possible to obtain DELTA-pK(a) data ranging from 1.4 to 4.2. The use of a-bromo amides of different acidity with the same exogenous acids provided the link between the different sets of relative acidities. In this way, using six alpha-bromo amides, a relative acidity scale encompassing an overall pK(a) variation in DMF of about 10 units could be established. The relative scale was then anchored to the low pK(a) scale in DMF through both the determination of the acidity of selected acids and using a correlation between literature pK(a) data obtained in both DMF and DMSO. The application of this original electrochemical mechanism provided absolute pK(a) data in DMF ranging from about 16 to 26, i.e., a pK(a) region that is practically unexplored in this solvent.

  DOI：

  10.1021/ja00024a041

文献信息

• NaBH₃CN: A Janus Substitute for Tin-Free Radical-Based Reactions
  作者：Julie Guiard、Yaniss Rahali、Jean-Pierre Praly

  DOI：10.1002/ejoc.201402441

  日期：2014.7

  depending on the conditions, either by reductive cyclization or atom-transfer radical cyclization. A related cyclization occurred upon using Cu(OAc)2. This and other assays showed the reduction by NaBH3CN of CuII salts, either added or formed in situ. Having both ionic and radical reactivity, NaBH3CN appears as a Janus reagent that may be useful for tin-free radical chemistry under mild and very simple

  除了表明如果溴/碘糖用 NaBH3CN 和 2,2"-偶氮二异丁腈处理时热自由基反应（还原、Giese 反应）是有效的，我们还探索了基于 CuI 盐（≤0.5 当量）的新引发条件。通过一组从有机溴化物产生自由基。这已得到证实，因为在惰性气氛下，乙酰溴葡萄糖在约 50 °C 被还原为重排的 2-脱氧葡萄糖，并且随着 N-烯丙基 α-溴酰胺反应，取决于条件，通过还原环化或原子转移自由基环化。使用 Cu(OAc)2 时会发生相关的环化反应。该试验和其他试验表明，添加或原位形成的 CuII 盐被 NaBH3CN 还原。具有离子和自由基两种反应性，
• A direct functionalization of tertiary alkyl bromides with O-, N-, and C-nucleophiles
  作者：Petr Vachal、Joan M. Fletcher、William K. Hagmann

  DOI：10.1016/j.tetlet.2007.06.091

  日期：2007.8

  Silver oxide used in stoichiometric amounts promoted the direct functionalization of tert-alkyl bromides and provided the desired adducts in 39–96% isolated yield. Reaction of tert-bromides with carboxylic acids yielded esters, with alcohols and phenols yielded alkyl and aryl ethers, with amines and anilines yielded selectively mono-alkylated amines and anilines, and with a C-nucleophile yielded an

  化学计量使用的氧化银促进了叔烷基溴化物的直接官能化，并以39-96％的分离产率提供了所需的加合物。的反应叔-溴化物与羧酸得到的酯，与产生的烷基和芳基醚，与胺和苯胺醇和酚产生选择性单烷基化的胺和苯胺，并用C-亲核体，得到的全碳季烃。该方法适用于伯胺与两种不同烷基溴的顺序烷基化，选择性地在一个反应​​釜中产生具有三个不同取代基的叔胺。
• Visible-Light-Driven Aryl Migration and Cyclization of α-Azido Amides
  作者：Siyu Liang、Kaijie Wei、Yajun Lin、Tuming Liu、Dian Wei、Bing Han、Wei Yu

  DOI：10.1021/acs.orglett.1c01120

  日期：2021.6.18

  i-Pr2NEt as the reducing agent, N-aryl α-azido tertiary amides were first converted to the corresponding aminyl radicals through reduction of the azido group; the aminyl radicals then underwent N-to-N aryl migration to give α-anilinyl-functionalized amides. α-Azido secondary amides, on the other hand, reacted with the solvent ethanol and i-Pr2NEt to afford the imidazolinone products.

  本文报道了 α-叠氮酰胺的两种新的可见光促进自由基反应。通过以i- Pr 2 NEt为还原剂催化[Ir(ppy) 2 (dtbbpy)]PF 6，N-芳基α-叠氮叔酰胺首先通过叠氮基的还原转化为相应的胺基；然后氨基自由基经历 N 到 N 芳基迁移，得到 α-苯胺基官能化的酰胺。另一方面，α-叠氮仲酰胺与溶剂乙醇和i- Pr 2 NEt 反应得到咪唑啉酮产物。
• Chemistry of Tertiary Carbon Center in the Formation of Congested C−O Ether Bonds
  作者：Goki Hirata、Kentarou Takeuchi、Yusuke Shimoharai、Michinori Sumimoto、Hazuki Kaizawa、Toshiki Nokami、Takashi Koike、Manabu Abe、Eiji Shirakawa、Takashi Nishikata

  DOI：10.1002/anie.202010697

  日期：2021.2.19

  Nucleophilic substitutions, including SN1 and SN2, are classical and reliable reactions, but a serious drawback is their intolerance for both bulky nucleophiles and chiral tertiary alkyl electrophiles for the synthesis of a chiral quaternary carbon center. An SRN1 reaction via a radical species is another conventional method used to carry out substitution reactions of bulky nucleophiles and alkyl halides

  包括S N 1和S N 2在内的亲核取代是经典且可靠的反应，但一个严重的缺点是它们对于庞大的亲核试剂和手性叔烷基亲电子试剂都不容忍合成手性季碳中心。一个S RN通过自由基物质进行的1反应是用于进行大体积亲核试剂和烷基卤化物的取代反应的另一种常规方法，但是不能使用手性叔烷基亲电试剂。因此，尚未充分研究使用手性叔烷基亲电试剂和大体积亲核试剂的立体特异性亲核取代反应。在本文中，我们描述了叔烷基醇与非手性或手性α-溴代羧酰胺作为叔烷基源的反应，以形成在氧原子上具有立体保留的两个不同叔烷基的拥挤醚化合物。
• Copper-Catalyzed Functionalized Tertiary-Alkylative Sonogashira Type Couplings via Copper Acetylide at Room Temperature
  作者：Yu Yamane、Naoki Miwa、Takashi Nishikata

  DOI：10.1021/acscatal.7b02615

  日期：2017.10.6

  several reports on Sonogashira couplings, but most of the reported reactions have employed aryl or alkenyl halides as coupling partners. Therefore, Sonogashira coupling is unsuitable for alkyl loadings, especially tertiary alkyl groups. In this research, we found that a copper catalyst is effective for a reaction between a terminal alkyne and an α-bromocarbonyl compound to form a quaternary carbon having

  关于Sonogashira偶联的报道很多，但是大多数报道的反应都使用了芳基或烯基卤化物作为偶联伴侣。因此，Sonogashira偶联不适合烷基负载，尤其是叔烷基。在该研究中，我们发现铜催化剂对于末端炔与α-溴代羰基化合物在室温下形成具有炔基的季碳的反应是有效的。对照实验表明，乙炔铜是关键中间体。