2-(6-bromobenzo[d][1,3]dioxol-5-yl)acetaldehyde | 889115-21-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并间二氧杂环戊烯类
• 英文名称: 2-(6-bromobenzo[d][1,3]dioxol-5-yl)acetaldehyde
• 英文别名: (6-Bromo-benzo[1,3]dioxol-5-yl)-acetaldehyde；2-(6-bromo-1,3-benzodioxol-5-yl)acetaldehyde
• CAS: 889115-21-3
• 化学式: C₉H₇BrO₃
• 分子量: 243.057
• InChiKey: QHPOXXANJHJULZ-UHFFFAOYSA-N

物化性质

• 沸点：
  332.9±42.0 °C(Predicted)
• 密度：
  1.654±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.8
• 重原子数：
  13
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 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：

  2-(6-bromobenzo[d][1,3]dioxol-5-yl)acetaldehyde 在 三氟化硼乙醚 作用下， 以 四氢呋喃 、 二氯甲烷 、 氯仿 为溶剂， 反应 24.5h， 生成 1-(2'-Bromo-4',5'-methylenedioxybenzyl)-2-formyl-1,2,3,4-tetrahydro-6,7-methyle-nedioxyisoquinoline
  参考文献：
  名称：

  ベルベリン型アルカロイドの製造方法

  摘要：

  提供一种可以高效生产苯并型生物碱的生产方法。使用三氟甲磺酸无水物和2,6-二-叔丁基-4-甲基吡啶进行特定化合物的分子内环化反应后，还原后脱溴化，然后使用醌类氧化剂进行芳香环化的步骤。【图示】图1

  公开号：

  JP2018043951A
• 作为产物：
  描述：

  methyl 2-(6-bromobenzo[d][1,3]dioxol-5-yl)acetate 在 sodium tetrahydroborate 、 戴斯-马丁氧化剂 、 calcium chloride 作用下， 以 乙醇 、 二氯甲烷 为溶剂， 反应 16.5h， 生成 2-(6-bromobenzo[d][1,3]dioxol-5-yl)acetaldehyde
  参考文献：
  名称：

  Facile synthesis of 4,5,6a,7-tetrahydrodibenzo[de,g]chromene heterocycles and their transformation to phenanthrene alkaloids

  摘要：

  Oxa-Pictet Spengler cyclization and microwave-assisted C-H arylation have been implemented as key steps in the synthesis of new isochroman heterocycles containing a 4,5,6a,7-tetrahydrodibenzo[de,g] chromene motif. These isochromans may be easily transformed to phenanthrene alkaloids via acidic cleavage of the isochroman ring and standard synthetic manipulations thereafter. The route described is attractive in that it provides access to two biologically interesting scaffolds in simple and high yielding synthetic steps. (c) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.07.095

文献信息

• Formal Synthesis of (−)-Cephalotaxine Based on a Tandem Hydroamination/Semipinacol Rearrangement Reaction
  作者：Qing-Wei Zhang、Kai Xiang、Yong-Qiang Tu、Shu-Yu Zhang、Xiao-Ming Zhang、Yu-Ming Zhao、Tian-Cai Zhang

  DOI：10.1002/asia.201101029

  日期：2012.5

  Catalytic asymmetric formal synthesis of (−)‐cephalotaxine has been accomplished based on an efficient tandem intramolecular hydroamination/asymmetric semipinacol rearrangement reaction catalyzed by chiral silver phosphate. During the course of the study it was observed that an advanced intermediate could be obtained in enantiopure form by enantiomer separation on silica gel.

  （-）-头孢他辛的催化不对称形式合成已基于手性磷酸银催化的高效串联分子内加氢胺化/不对称半频哪醇重排反应而完成。在研究过程中，观察到通过在硅胶上对映异构体分离可以得到对映纯形式的高级中间体。
• Stereospecific Synthesis of Tetrahydronaphtho[2,3-<i>b</i>]furans Enabled by a Nickel-Promoted Tandem Reductive Cyclization
  作者：Yu Peng、Jian Xiao、Xiao-Bo Xu、Shu-Ming Duan、Li Ren、Yong-Liang Shao、Ya-Wen Wang

  DOI：10.1021/acs.orglett.6b02665

  日期：2016.10.7

  toward new analogues of therapeutic agents (iso)deoxypodophyllotoxin are also reported. In addition, the inherent substrate control is disclosed for the observed unique stereoselectivities during cyclizations.

  首次有效地实现了镍介导的反式四氢萘并[2,3- b ]呋喃立体选择性合成的级联反应。温和的还原体系可以容易地由廉价且空气稳定的材料产生，并显示出以前很难或不可能通过其他方法获得的取代基的宽位置耐受性。还报道了易于合成新的治疗剂（异）脱氧鬼臼毒素的类似物。另外，公开了固有的底物控制用于环化过程中观察到的独特立体选择性。
• Stereoselective synthesis of a <i>Podophyllum</i> lignan core by intramolecular reductive nickel-catalysis
  作者：Jian Xiao、Xiao-Wei Cong、Gui-Zhen Yang、Ya-Wen Wang、Yu Peng

  DOI：10.1039/c8cc00001h

  日期：——

  A Ni-catalyzed reductive cascade to a diastereocontrolled construction of THN[2,3-c]furan, is developed. The mild reaction conditions led to the tolerance of broad functional groups that can be placed in almost every position of this skeleton with good yields. The conformational control for the observed trans- or cis-fused selectivity during this tandem cyclization-coupling is also proposed.

  镍催化还原还原级联的非对映体控制的THN [2,3-c]呋喃。温和的反应条件导致了宽泛的官能团的耐受性，这些官能团几乎可以以良好的产率置于该骨架的每个位置。还提出了在串联环化偶联过程中观察到的反式或顺式融合选择性的构象控制。
• Convergency and Divergency as Strategic Elements in Total Synthesis:  The Total Synthesis of (−)-Drupacine and the Formal Total Synthesis of (±)-Cephalotaxine, (−)-Cephalotaxine, and (+)-Cephalotaxine
  作者：Qi Liu、Eric M. Ferreira、Brian M. Stoltz

  DOI：10.1021/jo0710883

  日期：2007.9.1

  A concise route toward the syntheses of (−)-drupacine and (+)- and (−)-cephalotaxine has been developed. The syntheses rely on Pd(II)-catalyzed aerobic oxidative heterocyclization chemistry, which was employed to rapidly construct an important spirocyclic amine intermediate. A dynamic β-elimination/conjugate addition process was strategically applied to complete the first asymmetric total synthesis

  已经开发出一种简明的合成（-）-杜帕卡因和（+）-和（-）-头孢他辛的方法。合成依赖于Pd（II）催化的好氧氧化杂环化学，该化学可用于快速构建重要的螺环胺中间体。策略性地应用了动态β消除/共轭加成过程，以完成（-）-杜拉帕汀的首次不对称全合成。
• Multi-substituted 8-aminoimidazo[1,2-a]pyrazines by Groebke–Blackburn–Bienaymé reaction and their Hsp90 inhibitory activity
  作者：Jing Ren、Min Yang、Hongchun Liu、Danyan Cao、Danqi Chen、Jian Li、Le Tang、Jianhua He、Yue-Lei Chen、Meiyu Geng、Bing Xiong、Jingkang Shen

  DOI：10.1039/c4ob01865f

  日期：——

  Various 3,8-diaminoimidazo[1,2-a]pyrazines were efficiently prepared by MCR and some products showed moderate Hsp90 inhibitory activity.

  通过多组分反应，高效合成了各种3,8-二氨基咪唑并[1,2-a]吡嗪化合物，并且部分产物显示出中等水平的Hsp90抑制活性。