(R)-2,2-dimethyl-4-nitro-3-phenylbutanal | 748807-16-1

• 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: (R)-2,2-dimethyl-4-nitro-3-phenylbutanal
• 英文别名: 2,2-dimethyl-4-nitro-3-phenylbutanal；(+)-(R)-2,2-dimethyl-4-nitro-3-phenyl-butyraldehyde；(3R)-2,2-dimethyl-4-nitro-3-phenylbutanal
• CAS: 748807-16-1
• 化学式: C₁₂H₁₅NO₃
• 分子量: 221.256
• InChiKey: RDPSRQAHEBIFRW-LLVKDONJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  16
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  62.9
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  氘代甲醇 、 1-((1R,2R)-2-aminocyclohexyl)-3-phenylthiourea 、 (R)-2,2-dimethyl-4-nitro-3-phenylbutanal 在 苯甲酸 作用下， 以 氘代氯仿 为溶剂， 生成
  参考文献：
  名称：

  手性双官能硫脲催化羰基化合物向硝基烯烃的不对称共轭加成

  摘要：

  制备了易于获得的衍生自环己烷-1，2-二胺的手性硫脲，并发现其是将醛和酮共轭加成至硝基烯烃的高效有机催化剂。对于各种芳基和杂芳基硝基烯烃，获得了优异的对映选择性和收率。在这种转化中，基础添加剂对于获得高收率和出色的对映选择性至关重要。基于新的实验证据，提出了一种改进的催化机理，以使基础添加剂的重要作用合理化。

  DOI：

  10.1016/j.tetasy.2009.06.003
• 作为产物：
  描述：

  β-硝基苯乙烯 、 异丁醛 在 1-((1R,2R)-2-aminocyclohexyl)-3-(1²,3²,5²,7²-tetrapropoxy-1,3,5,7(1,3)-tetrabenzenacyclooctaphane-1⁵-yl)thiourea 作用下， 反应 16.0h， 以98%的产率得到(R)-2,2-dimethyl-4-nitro-3-phenylbutanal
  参考文献：
  名称：

  基于杯芳烃的伯胺硫脲催化的无溶剂对映选择性迈克尔反应

  摘要：

  为了研究其在对映选择性迈克尔加成反应中的催化能力，合成了安装在（R，R）-1,2-环己二胺支架上的上边缘功能化杯[4]芳烃基硫脲。发现反应在无溶剂条件下方便地进行，观察到良好至高对映选择性。根据这项初步研究，杯芳烃[4]芳烃单元可能会通过范德华接触和C–H···π相互作用与范德华接触并在较小程度上影响反应的立体化学结果，从而影响转化率。基材。

  DOI：

  10.1021/acs.joc.8b01454

文献信息

• Novel thiourea-amine bifunctional catalysts for asymmetric conjugate addition of ketones/aldehydes to nitroalkenes: rational structural combination for high catalytic efficiency
  作者：Jia-Rong Chen、Yi-Ju Cao、You-Quan Zou、Fen Tan、Liang Fu、Xiao-Yu Zhu、Wen-Jing Xiao

  DOI：10.1039/b925962g

  日期：——

  A series of thiourea-amine bifunctional catalysts have been developed by a rational combination of prolines with cinchona alkaloids, which are connected by a thiourea motif. The catalyst 3a, prepared from L-proline and cinchonidine, was found to be a highly efficient catalyst for the conjugate addition of ketones/aldehydes to a wide range of nitroalkenes (up to 98/2 dr and 96% ee). The privileged cinchonidine

  一系列 硫脲-胺双功能催化剂是通过脯氨酸与金鸡纳生物碱的合理组合而开发的，金鸡纳生物碱通过硫脲基序连接。催化剂3a由大号脯氨酸 和 辛可尼定被发现是一种高效的催化剂，用于将酮/醛共轭加成到各种各样的硝基烯烃中（高达98/2 dr和96％ee）。特权的辛可尼定骨架和硫脲基序对于反应活性和对映选择性是必不可少的。
• Prolinal dithioacetals: Highly efficient organocatalysts for the direct nitro-Michael additions in both organic and aqueous media
  作者：Tanmay Mandal、Wen Kuo、Matthew Su、Kartick Bhowmick、John C.-G. Zhao

  DOI：10.1016/j.tet.2017.10.008

  日期：2017.11

  Some novel prolinal dithioacetal derivatives have been synthesized and applied as the organocatalysts for the direct Michael addition of ketones and aldehydes to nitroalkenes. High enantioselectivities and diastereoselectivities have been obtained in both organic and aqueous media (dichloromethane, water, or brine).

  已经合成了一些新颖的脯氨二乙缩醛衍生物，并将其用作有机催化剂，用于将酮和醛直接迈克尔加成到硝基烯烃上。在有机和水性介质（二氯甲烷，水或盐水）中均获得了高对映选择性和非对映选择性。
• [EN] ORGANOCATALYSTS AND METHODS OF USE IN CHEMICAL SYNTHESIS<br/>[FR] ORGANOCATALYSEURS ET PROCEDES D'UTILISATION DE CES DERNIERS DANS LA SYNTHESE CHIMIQUE
  申请人：STC UNM

  公开号：WO2006007586A1

  公开（公告）日：2006-01-19

  The present invention pertains generally to compositions comprising organocatalysts that facilitate stereo-selective reactions and the method of their synthesis and use. Particularly, the invention relates to metal-free organocatalysts for facilitation of stereo-­selective reactions, and the method of their synthesis and use. These compounds have the structure of the Formulas (I) and (II). Where X is independently selected from CH2, N-Ra, O, S or C=O; Y is CH2, N-Ra, O, S or C=O, with the proviso that at least one of X or Y is CH2, and preferably both of X and Y are CH2; Ra is H, an optionally substituted C1-C12 alkyl, preferably an optionally substituted C1-C6 alkyl including a C3-C6 cyclic alkyl group, or an optionally substituted aryl group, preferably an optionally substituted phenyl group; Rb is H, an optionally substituted C1-C12 alkyl, preferably an optionally substituted C1-C6 acyclic or a a C3-C6 cyclic alkyl group, CHO, N(Me)O, CO(S)Ra or the group of Formula (III). Where Rc and Rd are each independently H, F, C1, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1-C12 alkyl, more preferably a C1-C6 alkyl, and an optionally substituted aryl group, or together Rc and Rd form an optionally substituted carbocyclic or optionally substituted heterocyclic ring; R1 is OH, OR, NR'R', NHC(=O)R, NHSO2R; R2 is H, F, C1, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1­C6 alkyl, an optionally substituted aryl group or a =O group (which establishes a carbonyl group with the carbon to which =O is attached; R3 is H, OH, F, C1, Br, I, Cl, an optionally substituted C1-C20 alkyl, alkenyl or alkynyl ('hydrocarbyl') group, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl, such that the carbon to which R3 is attached has an R or S configuration; R is H, an optionally substituted C1-C20 alkyl, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl group, R' and R' are each independently H, an optionally substituted C1-C20 alkyl group, preferably an optionally substituted C1-C6 alkyl, or an optionally substituted aryl group; or together R' and R' form an optionally substituted heterocyclic, preferably a 4 to 7 membered optionally substituted heterocyclic group or an optionally substituted heteroaryl ring with the nitrogen to which R' and R' are attached; and wherein said compound is free from a metal catalyst.

  本发明涉及一般包括有机催化剂的组合物，该催化剂促进立体选择性反应以及其合成和使用方法。特别地，本发明涉及无金属有机催化剂以促进立体选择性反应，以及其合成和使用方法。这些化合物具有以下结构的式（I）和（II）。其中X独立地选择自CH2、N-Ra、O、S或C=O；Y为CH2、N-Ra、O、S或C=O，但至少X或Y中的一个为CH2，最好是X和Y都为CH2；Ra为H、可选择地取代的C1-C12烷基，最好是可选择地取代的C1-C6烷基，包括C3-C6环烷基，或可选择地取代的芳基，最好是可选择地取代的苯基；Rb为H、可选择地取代的C1-C12烷基，最好是可选择地取代的C1-C6无环或C3-C6环烷基，CHO、N(Me)O、CO(S)Ra或式（III）的基团。其中Rc和Rd各自独立地为H、F、C1、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C12烷基，更好地是C1-C6烷基，以及可选择地取代的芳基，或者Rc和Rd一起形成可选择地取代的碳环或可选择地取代的杂环；R1为OH、OR、NR'R'、NHC(=O)R、NHSO2R；R2为H、F、C1、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，可选择地取代的芳基或=O基团（与=O连接的碳形成羰基基团）；R3为H、OH、F、C1、Br、I、Cl、可选择地取代的C1-C20烷基、烯基或炔基（'烃基'），最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基，使得R3连接的碳具有R或S构型；R为H、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基，R'和R'各自独立地为H、可选择地取代的C1-C20烷基，最好是可选择地取代的C1-C6烷基，或可选择地取代的芳基；或者R'和R'一起形成可选择地取代的杂环，最好是4到7成员的可选择地取代的杂环基团或与R'和R'连接的氮原子形成可选择地取代的杂芳基环；其中所述化合物不含金属催化剂。
• C₂ -symmetric sulfonamides as homogeneous and heterogeneous organocatalysts that mimic enzymes in enantioselective Michael additions
  作者：Harold Cruz、Felipe A. Servín、Domingo Madrigal、Daniel Chávez、Sergio Perez-Sicairos、Gerardo Aguirre、Andrew L. Cooksy、Ratnasamy Somanathan

  DOI：10.1002/chir.22984

  日期：2018.8

  homogeneous and heterogeneous organocatalysts and their application in the enantioselective conjugate 1,4‐Michael addition of carbonylic nucleophiles to β‐nitrostyrene. Organocatalysts hydrogen bond to β‐nitrostyrene and enamine in the transition state, mimicking an enzyme leading to final products in high yields (up to 98%) and good enantioselectivities (up to 96%). In addition, these results were supported

  本文中，我们报道了作为均相和非均相有机催化剂的C 2对称磺酰胺的合成及其在羰基亲核体向β-硝基苯乙烯的对映选择性共轭1,4-Michael加成中的应用。有机催化剂在过渡状态下与β-硝基苯乙烯和烯胺形成氢键，模拟一种酶，最终产物的收率高（高达98％）和对映选择性（高达96％）。另外，这些结果得到密度泛函计算的支持。
• ORGANOCATALYST
  申请人：Chen Kwunmin

  公开号：US20110040104A1

  公开（公告）日：2011-02-17

  The present invention provides an organocatalyst of formula (I), wherein R 1 is —H, —OH, —O—Si(R 4 )(R 5 )(R 6 ) or C 1-6 alkoxy, in which R 4 , R 5 and R 6 are identical or different and independently selected from the group consisting of C 1-6 alkyl, phenyl and phenyl substituted with C 1-6 alkyl; R 2 is —OH or ═O; X 1 is one selected from the group consisting of —NH—, —S— and X 2 is one selected from the group consisting of —C(═O)—, —CH 2 — and and X 1 is different from X 2 . The high yield and enantioselectivity of an addition reaction are obtained by using the organocatalyst of the present invention.

  本发明提供了一种式(I)的有机催化剂，其中R1为—H，—OH，—O—Si(R4)(R5)(R6)或C1-6烷氧基，其中R4、R5和R6相同或不同，并且独立地选自由C1-6烷基、苯基和苯基上取代的C1-6烷基的群；R2为—OH或═O；X1为从—NH—、—S—中选择的一种；X2为从—C(═O)—、—CH2—中选择的一种；X1与X2不同。通过使用本发明的有机催化剂，可以获得加成反应的高产率和对映选择性。