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

• Cycloaddition Chemistry of Anhydro-4-hydroxy-1,3-thiazolium Hydroxides (Thioisomünchnones) for the Synthesis of Heterocycles
  作者：Albert Padwa、Scott R. Harring、Donald L. Hertzog、William R. Nadler

  DOI：10.1055/s-1994-25621

  日期：——

  A series of α,α-disubstituted thioisomünchnones were prepared by treating acyclic or cyclic thioamides with bromoacetyl chloride in the presence of triethylamine. The resulting mesoionic dipole was found to undergo bimolecular 1,3-dipolar cycloaddition with several different dipolarophiles. When a hydrogen atom is present in the α-position of the thioamide, the initially formed N-acyl iminium ion undergoes proton loss to produce a S,N-ketene acetal at a faster rate than thioisomünchnone formation. The cycloaddition behavior of several substituted thioisomünchnones which possess a tethered alkene were also examined. The stereochemical outcome of the intramolecular reaction is the consequence of an endo cycloaddition of the neighboring π-bond across the transient thioisomünchnone dipole. Molecular mechanics calculations reveal that the endo diastereomers are significantly lower in energy than the corresponding exo isomers. Attempts to cycloadd the thioisomünchnone dipole across a tethered indolyl ring were unsuccessful. Instead, products derived by nucleophilic cyclization of the indolyl ring onto the thio N-acyl iminium ion were formed in good yield.

  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。
• 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.
• 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.
• 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.