3,3-dimethylpiperidine-2-thione | 150989-43-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 哌啶类
• 英文名称: 3,3-dimethylpiperidine-2-thione
• CAS: 150989-43-8
• 化学式: C₇H₁₃NS
• mdl: MFCD19217384
• 分子量: 143.253
• InChiKey: UKSOCYYOWUFIDB-UHFFFAOYSA-N

物化性质

• 熔点：
  115-116 °C
• 沸点：
  186.4±23.0 °C(predicted)
• 密度：
  1.02±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.5
• 重原子数：
  9
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.857
• 拓扑面积：
  44.1
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-methylmalonyl dichloride 、 3,3-dimethylpiperidine-2-thione 以 二氯甲烷 为溶剂， 反应 12.0h， 以95%的产率得到anhydro-3,9,9-trimethyl-4-hydroxy-2-oxo-tetrahydropyrido<2,1-b><1,3>thiazinium hydroxide
  参考文献：
  名称：

  与交叉共轭杂芳族甜菜碱的双分子1,4-偶极环加成反应有关的详细信息

  摘要：

  通过3H-硫代内酰胺与1,3-双亲电子试剂的反应，可以轻松地制备一系列3,3-二取代的双环脱水4-羟基-2-羟基-2-氧代-1,3-噻嗪鎓氢氧化物。这些交叉共轭的杂芳族甜菜碱经过区域和非对映异构的1,4-偶极环加成反应，并带有富电子和缺电子的π键，生成含有羰基硫桥的1,4-环加合物。通过单晶X射线测定来表征代表性的甜菜碱偶极子和1,4-环加合物。在某些情况下，最初形成的环加合物可以在进一步加热时失去COS。噻嗪甜菜碱的前沿轨道系数通过PM3哈密顿量的半经验MOPAC计算确定。1的HOMO

  DOI：

  10.1016/0040-4020(95)00323-z
• 作为产物：
  描述：

  3,3-二甲基-2-哌啶酮 在 劳森试剂 作用下， 以 xylene 为溶剂， 反应 0.25h， 以77%的产率得到3,3-dimethylpiperidine-2-thione
  参考文献：
  名称：

  Cycloaddition Chemistry of Anhydro-4-hydroxy-1,3-thiazolium Hydroxides (Thioisomünchnones) for the Synthesis of Heterocycles

  摘要：

  一系列的α,α-二取代硫代异肟酮通过在三乙胺存在下，用溴乙酰氯处理非环状或环状硫代酰胺来制备。结果发现，这些介离子偶极体会发生双分子1,3-偶极环加成反应与多种不同的偶极体分子。当硫代酰胺的α-位上有氢原子时，最初形成的N-酰基亚胺离子会快速失去质子，产生S,N-酮烯醇缩醛，比形成硫代异肟酮的速度更快。还研究了几种带有附加烯烃的取代硫代异肟酮的环加成行为。内向环加成反应是邻近的π键跨过瞬态硫代异肟酮偶极子的结果，这是分子内反应的立体化学产物的成因。分子力学计算表明，内向非对映异构体的能量比相应的向外构体显著更低。尝试将硫代异肟酮偶极子环加成到附加的吲哚环上未能成功。相反，高产率地形成通过吲哚环以亲核方式环化到硫代N-酰基亚胺离子上的产物。

  DOI：

  10.1055/s-1994-25621

文献信息

• Intramolecular 1,4-dipolar cycloaddition of cross-conjugated heterocyclic betaines. A new route to hexahydrojulolidines and related peri-fused ring systems
  作者：Kevin T. Potts、Thevarak Rochanapruk、Steven J. Coats、Lazaros Hadjiarapoglou、Albert Padwa

  DOI：10.1021/jo00071a007

  日期：1993.9

  Alkenyl-substituted bicyclic anhydro-4-hydroxy-2-oxo-1,3-thiazinium hydroxides prepared from 3,3-disubstituted thiolactams and 1,3-bielectrophiles formed thermally-induced intramolecular cycloadducts which underwent loss of carbonyl sulfide, followed by a 1,5-hydrogen shift, to hexahydrojulolidines and related ring systems.
• Intramolecular 1,4-Dipolar Cycloadditions of Cross-Conjugated Heteroaromatic Betaines. Synthesis of Hexahydrojulolidines and Related Peri- and Ortho-Fused Ring Systems
  作者：Kevin T. Potts、Thevarak Rochanapruk、Albert Padwa、Steven J. Coats、Lazaros Hadjiarapoglou

  DOI：10.1021/jo00117a035

  日期：1995.6

  3-Alkenyl 2-lactams react with (chlorocarbonyl)phenylketene to give nonisolable anhydro-4-hydroxy-2-oxo-1,3-oxazinium hydroxides which undergo regio- and stereospecific 1,4-dipolar cycloaddition in moderate yields to produce cycloadducts containing a carbon dioxide bridge. Thermolysis of the cycloadduct led to extrusion of carbon dioxide via a nonconcerted 1,5-hydrogen shift to give julolidine-type derivatives. Two of the cycloadducts were characterized by single-crystal X-ray determinations. A significant enhancement in the overall yield of the cycloaddition occurred in related reactions using anhydro-4-hydroxy-2-oxo-1,3-thiazinium hydroxides obtained from 3-alkenyl-3-ethyl(or methyl) 2-thiolactams and a variety of 1,3-bielectrophiles such as (chlorocarbonyl)phenylketene, carbon suboxide, substituted malonyl dichlorides, and ethyl (chlorocarbonyl)acetate. The thiazinium betaines were often isolable, and in one instance, a single-crystal X-ray characterization was possible. Cycloaddition of the thiazinium betaines occurred in a regiospecific manner. The initially formed cycloadducts which retained the carbonyl sulfide bridge could be induced to lose COS on further heating. Julolidine-type derivatives were obtained principally via a nonconcerted process. Variation in lactam ring size, coupled with tether length and substituent in the 1,3-bielectrophile , enabled control of ring size, substituents, and whether an ortho- or peri-fused tricyclic system resulted from the overall cycloaddition. In contrast to the lactam system, the thiolactams require disubstitution in the 3-position to avoid proton loss in the intermediate betaine with formation of a 1,3-thiaioline-4,6-dione.
• A short synthesis of (±)-alloyohimbane via a thioisomünchnone based intramolecular dipolar-cycloaddition reaction
  作者：Todd M. Heidelbaugh、Bing Liu、Albert Padwa

  DOI：10.1016/s0040-4039(98)00901-0

  日期：1998.7

  Thioisomunchnone dipoles were generated by the reaction of bromoalkenoyl chlorides with thioamides. The intramolecular dipolar-cycloaddition reaction was used for a short synthesis of the yohimbanoid alkaloid (+/-)-alloyohimbane. (C) 1998 Elsevier Science Ltd. All rights reserved.
• A One-Pot Bicycloannulation Method for the Synthesis of Tetrahydroisoquinoline Systems
  作者：Albert Padwa、L. Scott Beall、Todd M. Heidelbaugh、Bing Liu、Scott M. Sheehan

  DOI：10.1021/jo991742h

  日期：2000.5.1

  A highly effective method for the synthesis of the core indolo[2,3-a]quinolizidine skeleton found in yohimbine is described. The reaction of N-monosubstituted thioamides with bromoalkenoyl chlorides furnishes thioisomunchnones as transient 1,3-dipoles that undergo ready intramolecular cycloaddition across the tethered pi-bond to give thio-bicycloannulated products in a one-pot operation. The stereochemical outcome of the intramolecular reaction is the consequence of an endo cycloaddition of the neighboring-bond across the transient thioisomunchnone dipole. A major limitation of the method is that when a hydrogen is present in the alpha-position of the thioamide the initially formed thio-N-acyliminium ion undergoes proton loss to produce a S ,N-ketene acetal at a faster rate than dipole formation. Treatment of tetrahydro-beta-carboline-1-thione with 2-bromooct-7-enoyl chloride followed by reductive removal of sulfur from the cycloadduct resulted in the formation of (+/-)-alloyahimbanone. Attempts to cycloadd the thioisomunchnone dipole across several nucleophilic-bonds failed, and instead, products derived from cyclization of the pi-bond onto the initially formed thio-N-acyliminium ion were formed. The resulting N,S-ketals were further converted into several tetrahydroisoquinoline alkaloids in good yield.