S-methyl 2-cyanopent-4-enethioate | 131297-27-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: S-methyl 2-cyanopent-4-enethioate
• CAS: 131297-27-3
• 化学式: C₇H₉NOS
• 分子量: 155.221
• InChiKey: DGRFQZWVQKKROX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  10
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  66.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  S-methyl 2-cyanopent-4-enethioate 、 2-氯丙烯腈 在 6'-OH cinchona alkaloid 作用下， 以 甲苯 为溶剂， 反应 96.0h， 以60%的产率得到2-(2-chloro-2-cyano-ethyl)-2-cyano-pent-4-enethioic acid S-methyl ester
  参考文献：
  名称：

  双功能金鸡纳生物碱催化：用于直接创建非相邻立体中心的催化不对称串联共轭加成 - 质子化

  摘要：

  催化串联不对称反应构成了直接从非手性前体在非环状分子中不对称构建非相邻立体中心的有力策略。在这篇通讯中，我们报告了在双功能金鸡纳生物碱催化剂的催化下，三取代的碳供体对 2-氯丙烯腈的高度对映选择性和非对映选择性加成。这代表了第一个不对称串联共轭加成-质子化，对两个不相邻的立体中心进行有效的催化控制。正如 (-)-manzacin A 的简洁且高度立体选择性的正式全合成所证明的那样，这种不对称串联反应为 1,3-叔-四元立体中心的对映选择性和非对映选择性创建建立了一种新的通用催化方法。

  DOI：

  10.1021/ja060312n
• 作为产物：
  描述：

  5-[双(甲基硫代)亚甲基]-2,2-二甲基-1,3-二噁烷-4,6-二酮 以 乙醇 为溶剂， 反应 24.0h， 生成 S-methyl 2-cyanopent-4-enethioate
  参考文献：
  名称：

  Synthesis of .alpha.-cyano carbonyl compounds by flash vacuum thermolysis of (alkylamino)methylene derivatives of Meldrum's acid. Evidence for facile 1,3-shifts of alkylamino and alkylthio groups in imidoylketene intermediates

  摘要：

  The syntheses and flash vacuum thermolyses of 5-[(alkylamino)methylene]-2,2-dimethyl-1,3-dioxane-4,6-diones (Meldrum's acid derivatives) 13a-i are described. Thermolysis of 13a as well as of ethyl 3-(tert-butylamino)acrylate (22) gives a tautomeric mixture of cyanoacetaldehyde (14) and 3-hydroxypropenenitrile (15). Thermolysis of 13b gives iminoacrolein 26 and not cyanoacetone (29). Thermolysis of 13c,d gives S-methyl cyanothioacetate (30), and 13f-h give cyanoacetamides 31 in high yields. 2-Cyanopent-4-enoic acid derivatives 32 are obtained from Meldrum's acids 13e,i. The results are discussed in terms of facile 1,3-shifts of methylthio and alkylamino groups in imidoylketenes, interconverting imidoylketenes and acylketene imines.

  DOI：

  10.1021/jo00003a014

文献信息

• Control of Diastereoselectivity in Tandem Asymmetric Reactions Generating Nonadjacent Stereocenters with Bifunctional Catalysis by Cinchona Alkaloids
  作者：Baomin Wang、Fanghui Wu、Yi Wang、Xiaofeng Liu、Li Deng

  DOI：10.1021/ja0670409

  日期：2007.1.1

  We report the manipulation of hydrogen-bonding-based cooperative catalysis to control the diastereoselectivity for a tandem asymmetric reaction creating two nonadjacent stereocenters. This ability to control both the enantioselectivity and diastereoselectivity allows, for the first time, the direct and stereoselective construction of 1,3-tertiary-quaternary stereocenters in any of the possible four configurations from the same prochiral precursors with catalytic control. The synthetic consequence of such catalyst-controlled construction of nonadjacent stereocenters is illustrated by the asymmetric synthesis of manzacidin C by using the same reaction sequence that was previously applied to the total synthesis of manzacidin A.
• CHEIKH, ABDELHAMID;BEN;CHUCHE, JOSSELIN;MANISSE, NOEL;POMMELET, JEAN CLAU+, J. ORG. CHEM., 56,(1991) N, C. 970-975
  作者：CHEIKH, ABDELHAMID、BEN、CHUCHE, JOSSELIN、MANISSE, NOEL、POMMELET, JEAN CLAU+

  DOI：——

  日期：——
• Asymmetric carbon-carbon-bond-forming reactions catalyzed by bifunctional cinchona alkaloids
  申请人：Deng Li

  公开号：US20070083049A1

  公开（公告）日：2007-04-12

  One aspect of the present invention relates to quinine-based and quinidine-based catalysts. In certain embodiments, the quinine-based and quinidine-based catalysts contain a hydroxy group at the 6′ position. In certain embodiments, the quinine-based and quinidine-based catalysts contain an O-aryl group or an O-aroyl group at the C9 position. In certain embodiments, the quinine-based and quinidine-based catalysts contain an optionally substituted O-diazene group or an optionally substituted O-benzoyl group at the C9 position. In certain embodiments, the quinine-based and quinidine-based catalysts contain a thiourea at the C9 position. In certain embodiments, the quinine-based and quinidine-based catalysts contain an NH(═S)NH-aryl group at the C9 position. Another aspect of the present invention relates to a method of preparing a chiral, non-racemic compound from a prochiral electron-deficient alkene or prochiral imine, comprising the step of: reacting a prochiral alkene or imine with a nucleophile in the presence of a catalyst; thereby producing a chiral, non-racemic compound; wherein said catalyst is a derivatized quinine or quinidine. In certain embodiments, the nucleophile is a malonate or β-ketoester. In certain embodiments the nucleophile is an alkyl or aryl or aralkyl 2-cyano-2-alkylacetate. In certain embodiments the nucleophile is an alkyl or aryl or aralkyl 2-cyano-2-alkylacetate. Another aspect of the present invention relates to a method of kinetic resolution, comprising the step of: reacting a racemic aldehyde or racemic ketone with a nucleophile in the presence of a derivatized quinine or quinidine, thereby producing a non-racemic, chiral compound. In certain embodiments, the kinetic resolution is dynamic.
• US7582764B2
  申请人：——

  公开号：US7582764B2

  公开（公告）日：2009-09-01
• Dual-Function Cinchona Alkaloid Catalysis:  Catalytic Asymmetric Tandem Conjugate Addition−Protonation for the Direct Creation of Nonadjacent Stereocenters
  作者：Yi Wang、Xiaofeng Liu、Li Deng

  DOI：10.1021/ja060312n

  日期：2006.3.1

  addition-protonation with efficient catalytic control of two nonadjacent stereocenters. As demonstrated in a concise and highly stereoselective formal total synthesis of (-)-manzacidin A, this asymmetric tandem reaction establishes a new and versatile catalytic approach for the enantioselective and diastereoselective creation of 1,3-tertiary-quaternary stereocenters.

  催化串联不对称反应构成了直接从非手性前体在非环状分子中不对称构建非相邻立体中心的有力策略。在这篇通讯中，我们报告了在双功能金鸡纳生物碱催化剂的催化下，三取代的碳供体对 2-氯丙烯腈的高度对映选择性和非对映选择性加成。这代表了第一个不对称串联共轭加成-质子化，对两个不相邻的立体中心进行有效的催化控制。正如 (-)-manzacin A 的简洁且高度立体选择性的正式全合成所证明的那样，这种不对称串联反应为 1,3-叔-四元立体中心的对映选择性和非对映选择性创建建立了一种新的通用催化方法。