2-benzylhexahydro-1H-isoindole-1,3(2H)-dione | 66050-00-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异吲哚及其衍生物
• 英文名称: 2-benzylhexahydro-1H-isoindole-1,3(2H)-dione
• 英文别名: cis-2-benzyl-octahydroisoindole-1,3-dione；cis-2-benzylhexahydroisoindole-1,3-dione；N-benzyl-cis-hexahydrophthalimide；N-Benzyl-cis-hexahydrophthalimid；(3aR,7aS)-2-benzyl-3a,4,5,6,7,7a-hexahydroisoindole-1,3-dione
• CAS: 66050-00-8
• 化学式: C₁₅H₁₇NO₂
• 分子量: 243.305
• InChiKey: KCSZGLKFTDCMAL-BETUJISGSA-N

物化性质

• 沸点：
  445.7±24.0 °C(Predicted)
• 密度：
  1.198±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  18
• 可旋转键数：
  2
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  37.4
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-benzylhexahydro-1H-isoindole-1,3(2H)-dione 在 α,α-diphenyl-L-prolinol borane 硫酸 、 硼烷 作用下， 以 四氢呋喃 为溶剂， 反应 5.0h， 生成 (3S,3aR,7aS)-2-benzyl-3-ethoxy-octahydroisoindol-1-one
  参考文献：
  名称：

  Oxazaborolidine catalyzed enantioselective reductions of cyclic meso-imides

  摘要：

  A new asymmetric reduction method for meso-imides is reported. Treatment of various imides with a mixture of a chiral oxazaborolidine and BH3 leads to a mixture of cis- and trans-hydroxylactams and, after subsequent ethanolysis, to the corresponding diastereomerically pure trans-ethoxylactams. The enantiomeric excesses were shown to be 75-89% by both chiral HPLC-determinations and conversion of the reduction products into the corresponding, known lactones.

  DOI：

  10.1016/s0040-4039(00)79972-2
• 作为产物：
  描述：

  (1R,2S)-2-(benzylcarbamoyl)cyclohexanecarboxylic acid 在 六甲基二硅氮烷 、 zinc(II) chloride 作用下， 以 甲苯 为溶剂， 反应 2.0h， 生成 2-benzylhexahydro-1H-isoindole-1,3(2H)-dione
  参考文献：
  名称：

  The crucial role of the nitrogen substituent in the desymmetrisation of cyclic meso-imides using B-Me and B-OMe oxazaborolidine catalysts

  摘要：

  Various cyclic meso-imides have been desymmetrised via enantioselective reduction using two chiral oxazaborolidine catalysts derived from (1R,2S)-cis-1-amino-indan-2-ol followed by the reduction of the hydroxylactarn product to give the gamma-lactam. The enantiomeric excesses were shown to be 27-99% by chiral HPLC and chiral GC of the gamma-lactam products with the nitrogen substituent playing a pivotal role in determining yield and selectivity. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2006.09.051

文献信息

• Titanium- and Lewis Acid-Mediated Cyclopropanation of Imides
  作者：Philippe Bertus、Jan Szymoniak

  DOI：10.1021/ol062938o

  日期：2007.2.1

  We report a straightforward synthesis of 1-azaspirocyclopropane lactams from imides. Following the described procedure, polycyclic nitrogen heterocycles containing a cyclopropane unit could be obtained from unsaturated imides. [reaction: see text].

  我们报道了由酰亚胺直接合成1-氮杂螺环丙烷内酰胺。按照所述方法，可以从不饱和酰亚胺获得含有环丙烷单元的多环氮杂环。[反应：请参见文字]。
• Chiral Bases as Useful Probes of Lithium Amide Reactivity
  作者：Mark R. Prestly、Nigel S. Simpkins

  DOI：10.1002/anie.201206558

  日期：2012.11.26

  Experiments involving competition between chiral and achiral lithium amides provide a qualitative impression of the kinetics of different amide motifs in enolization reactions. The level of enantioselectivity was not diminished by the inclusion of lithium diisopropylamide (LDA; see scheme) into asymmetric enolizations mediated by a chiral lithium amide base, derived from a 1,2‐diamine.

  涉及手性和非手性锂酰胺竞争的实验给定了烯醇化反应中不同酰胺基序动力学的定性印象。通过将二异丙基氨基锂（LDA；参见方案）包含在由1,2-二胺衍生的手性锂酰胺碱介导的不对称烯醇化反应中，对映选择性水平并未降低。
• Selective reduction of αβ-olefinic amides and lactams by magnesium and methanol
  作者：Roger Brettle、Sa'ad M. Shibib

  DOI：10.1039/p19810002912

  日期：——

  αβ-Olefinic amides with various substitution patterns at the carbon–carbon double bond and at nitrogen are all reduced to the corresponding saturated amides by magnesium and methanol. The same reducing system reduces N-benzyl-8-azabicyclo[4.3.0]nona-1(6),3-dien-7-ones at the conjugated double bond to give mixtures of the cis-and trans-dihydro-derivatives; the isolated, non-conjugated double bond is

  在碳-碳双键和氮上具有各种取代方式的αβ-烯烃酰胺都被镁和甲醇还原为相应的饱和酰胺。相同的还原体系将共轭双键处的N-苄基-8-氮杂双环[4.3.0] nona-1（6），3-dien-7-还原为顺式和反式二氢衍生物的混合物。分离的非共轭双键即使在3，4-二苯基取代的化合物中也不会还原。镁和甲醇降低喹啉-2（1 H ^） -酮其3,4-二氢衍生物，和5,6,7,8-四氢喹啉-2（1 H ^） -酮于两个二氢衍生物的混合物。
• Cu(OTf)₂ catalyzed Ugi-type reaction of <i>N</i>,<i>O</i>-acetals with isocyanides for the synthesis of pyrrolidinyl and piperidinyl 2-carboxamides
  作者：Zhuo-Ya Mao、Xiao-Di Nie、Yi-Man Feng、Chang-Mei Si、Bang-Guo Wei、Guo-Qiang Lin

  DOI：10.1039/d1cc03113a

  日期：——

  The Cu(OTf)2 catalyzed Ugi-type reactions of N,O-acetals with isocyanides have been described for the synthesis of pyrrolidinyl and piperidinyl 2-carboxamides. 4-Hydroxy-5-substituted-prolinamides can be obtained in high diastereoselectivities (2,4-cis/trans > 19 : 1) and a stereoselective model was proposed for 2,4-cis selectivity. Moreover, 4-F-VH 032, a novel analog of the VHL ligand, was conveniently

  已经描述了用于合成吡咯烷基和哌啶基 2-甲酰胺的 Cu(OTf) 2催化的N，O-缩醛与异氰化物的Ugi 型反应。4-羟基-5-取代的脯氨酰胺可以以高非对映选择性（2,4-顺式/反式> 19:1）获得，并且提出了2,4-顺式选择性的立体选择性模型。此外，4-F-VH 032，一种新型的 VHL 配体类似物，可以通过使用本方法方便地获得。
• Enantioselective Reduction of meso-Cyclic-1,2-dicarboxylic Anhydrides and 1,2-Dicarboximides: Asymmetric Synthesis of Bicyclic Lactones and Hydroxylactams.
  作者：Kenji MATSUKI、Hirozumi INOUE、Akihiko ISHIDA、Mikio TAKEDA、Masako NAKAGAWA、Tohru HINO

  DOI：10.1248/cpb.42.9

  日期：——

  Chiral bicyclic lactones (3, 8, 9) and bicyclic hydroxylactams (10-13) were synthesized by highly enantioselective reduction of meso-cyclic-1, 2-dicarboxylic anhydrides (1, 4) and meso-cyclic-1, 2-dicarboximides (2) with lithium aluminum hydride (LiAlH4)-alcohol(ROH)-(R)- or (S)-1, 1'-bi-2-naphthol complex [(R)- or (S)-BINAL-H(ROH)]. Treatment of the hydroxylactams (10-13) with triethylsilane (Et3SiH) and trifluoroacetic acid (CF3CO2H) gave chiral bicyclic lactams (14, 15) in quantitative yields. Removal of the N-4-methoxyphenyl group of the lactams (14, 15) with cerium(IV) ammonium nitrate (CAN) proceeded smoothly to give the corresponding N-unsubstituted lactams (16, 17) in high optical purity.

  手性双环内酯（3、8、9）和双环羟基内酰胺（10-13）是通过对meso-环状-1,2-二羧酸酐（1、4）和meso-环状-1,2-二羧酰胺（2）进行具有高对映选择性的还原反应，使用锂铝氢化物（LiAlH4）-醇（ROH）-（R）或（S）-1,1'-双-2-萘醇复合物[(R)或(S)-BINAL-H(ROH)]合成的。对羟基内酰胺（10-13）进行三乙基硅烷（Et3SiH）和三氟乙酸（CF3CO2H）的处理，得到了手性双环内酰胺（14、15），产率为定量。在高光学纯度下，用铈(IV)铵硝酸盐（CAN）顺利去除内酰胺（14、15）中的N-4-甲氧基苯基基团，得到相应的N-不取代内酰胺（16、17）。