2,5-dimethyl-2,5-dihydrothiophene

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氢噻吩类
• 英文名称: 2,5-dimethyl-2,5-dihydrothiophene
• 化学式: C₆H₁₀S
• 分子量: 114.211
• InChiKey: VBZCQNYJFMHPMW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  7
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  25.3
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,5-dimethyl-2,5-dihydrothiophene 在 sodium hydride 作用下， 以 氘代二甲亚砜 为溶剂， 反应 6.0h， 生成 sodium 2,5-dimethyl-thiapentadienyl (syn) 、 sodium 2,5-dimethyl-thiapentadienyl (anti)
  参考文献：
  名称：

  一种组合的实验和thiapentadienyl，sulfinylpentadienyl和butadienesulfonyls的金属盐的理论研究

  摘要：

  以下的非环状的盐的合成中的替代方法（CH 2 CHCHCHS）M [M = K，1（ķ）; 钠，1（NA）; 李，1（李）〕，（CH 2 CHCHCHSO）M [M = K，2（ķ）; 钠，2（NA）]，（CH 2 CHCHCHSO 2）M [M = K，3（ķ）; 钠，3（NA）; 李，3（李）〕，（CH（Me）的CHC（Me）的CHSO 2）M [Me5-顺，M = K，9（ķ）; 钠，9（NA）; 李，9（李），（CH（Me）的CHCHC（Me）中S）M [Me5-顺，M = K，10（ķ）; 钠，10（Na）的; Me5-抗，M = K，11（K） ; 钠，11（钠）]的描述，是由于二氢噻吩中的C–S键通过用不同的碱基去质子化而激活的结果。甲基取代基在dihydrothiophenes效果显著，这显着改变了碱的选择。分析了反应条件，溶剂类型，碱和二氢噻吩的影响。的NMR光谱法，包括

  DOI：

  10.1016/j.jorganchem.2004.12.014
• 作为产物：
  描述：

  2,5-二甲基噻吩 在 硫酸 、 锌 作用下， 以 二氯甲烷 为溶剂， 反应 8.0h， 以74%的产率得到2,5-dimethyl-2,5-dihydrothiophene
  参考文献：
  名称：

  Reduction of thiophenes in the presence of sulfuric acid and zinc

  摘要：

  Alkyl-substituted thiophenes are hydrogenated by the Zn-H2SO4 system to the corresponding 2,5-dihydrothiophenes and thiophanes. In the case of 2-formyl-and 2-acetylthiophene it was established that in substituted thiophenes simultaneous reduction of the substituent to an alkyl group occurs in addition to hydrogenation of the aromatic ring. The optimum conditions for hydrogenation were selected experimentally.

  DOI：

  10.1007/s10593-011-0877-y

文献信息

• Modification Process For Polymer Surfaces, Notably For Hydroxylation of Polymer Surfaces and Products So Obtained
  申请人：Bureau Christophe

  公开号：US20080269423A1

  公开（公告）日：2008-10-30

  The present invention concerns the use of RO. radicals, R being a hydrogen, an alkyl group having 2 to 15 carbons, an acyl group —COR′ in which R′ represents an alkyl group having 2 to 15 carbons, or an aroyl group —COAr in which Ar represents an aromatic group having 6 to 15 carbons, for the hydroxylation, alkoxylation or oxycarbonylation of polymer or polymer mixture surfaces, the said polymers consisting in monomeric units of which at least 50% among these are aromatic units and the said RO. radicals being generated by electrochemical or photochemical means.
• US7956099B2
  申请人：——

  公开号：US7956099B2

  公开（公告）日：2011-06-07
• [EN] METHOD FOR THE MODIFICATION OF POLYMER SURFACES, SUCH AS THE HYDROXYLATION OF POLYMER SURFACES, AND PRODUCTS THUS OBTAINED<br/>[FR] PROCÉDÉ DE MODIFICATION DE SURFACES DE POLYMÈRES, NOTAMMENT D 'HYDROXYLATION DE SURFACES DE POLYMÈRES, ET PRODUITS TELS QU' OBTENUS
  申请人：ALCHIMER

  公开号：WO2007042658A1

  公开（公告）日：2007-04-19

  [EN] The invention relates to the use of radicals RO^?, R representing a hydrogen atom, an alkyl group comprising between 2 and 15 carbon atoms, a -COR' acyl group in which R' represents an alkyl group comprising between 2 and 15 carbon atoms, or a -COAr aroyl group in which Ar represents an aromatic group comprising between 6 and 15 carbon atoms, for the hydroxylation, alcoxylation or oxycarbonylation of polymer surfaces or mixtures of polymers, said polymers comprising monomeric units, at least 50 % thereof comprising aliphatic units, and said RO^? radicals being generated electrochemically or photochemically.
  [FR] La présente invention concerne l'utilisation de radicaux R0^?, R représentant un atome d'hydrogène, un groupe alkyle comprenant de 2 à 15 atomes de carbone, un groupe acyle -COR' dans lequel R' représente un groupe alkyle comprenant de 2 à 15 atomes de carbone, ou un groupe aroyle -COAr dans lequel Ar représente un groupe aromatique comprenant de 6 à 15 atomes de carbone, pour l'hydroxylation, l'alcoxylation ou l'oxycarbonylation de surfaces de polymères ou de mélanges de polymères, lesdits polymères étant constitués de motifs monomériques dont au moins 50% parmi ceux-ci sont des motifs aromatiques, et lesdits radicaux RO^? étant générés par voie électrochimique ou photochimique.
• Reduction of thiophenes in the presence of sulfuric acid and zinc
  作者：F. M. Latypova、M. A. Parfenova、N. K. Lyapina

  DOI：10.1007/s10593-011-0877-y

  日期：2011.12

  Alkyl-substituted thiophenes are hydrogenated by the Zn-H2SO4 system to the corresponding 2,5-dihydrothiophenes and thiophanes. In the case of 2-formyl-and 2-acetylthiophene it was established that in substituted thiophenes simultaneous reduction of the substituent to an alkyl group occurs in addition to hydrogenation of the aromatic ring. The optimum conditions for hydrogenation were selected experimentally.
• A combined experimental and theoretical study of metallic salts of thiapentadienyl, sulfinylpentadienyl and butadienesulfonyls
  作者：Prócoro Gamero-Melo、Manuel Villanueva-García、Juvencio Robles、Rosalinda Contreras、M. Angeles Paz-Sandoval

  DOI：10.1016/j.jorganchem.2004.12.014

  日期：2005.3

  choice of the base. The influence of the reaction conditions, type of solvent, base and dihydrothiophenes is analyzed. The NMR spectroscopy, including NOESY, ROESY and difference NOE establish the preferred U conformation for all derivatives, and support a delocalization of charge on the thiapentadienyl (1M) and sulfinylpentadienyl (2M) complexes. However, a conjugated diene structure is proposed on the

  以下的非环状的盐的合成中的替代方法（CH 2 CHCHCHS）M [M = K，1（ķ）; 钠，1（NA）; 李，1（李）〕，（CH 2 CHCHCHSO）M [M = K，2（ķ）; 钠，2（NA）]，（CH 2 CHCHCHSO 2）M [M = K，3（ķ）; 钠，3（NA）; 李，3（李）〕，（CH（Me）的CHC（Me）的CHSO 2）M [Me5-顺，M = K，9（ķ）; 钠，9（NA）; 李，9（李），（CH（Me）的CHCHC（Me）中S）M [Me5-顺，M = K，10（ķ）; 钠，10（Na）的; Me5-抗，M = K，11（K） ; 钠，11（钠）]的描述，是由于二氢噻吩中的C–S键通过用不同的碱基去质子化而激活的结果。甲基取代基在dihydrothiophenes效果显著，这显着改变了碱的选择。分析了反应条件，溶剂类型，碱和二氢噻吩的影响。的NMR光谱法，包括