trifluoromethanesulfonic acid 5-methyl-1-(toluene-4-sulfonyl)-4,5-dihydro-1H-pyrrol-2-yl ester | 790661-74-4

• 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: trifluoromethanesulfonic acid 5-methyl-1-(toluene-4-sulfonyl)-4,5-dihydro-1H-pyrrol-2-yl ester
• 英文别名: 5-methyl-1-(4-methylphenylsulfonyl)-4,5-dihydro-1H-pyrrol-2-yl trifluoromethanesulfonate；[2-Methyl-1-(4-methylphenyl)sulfonyl-2,3-dihydropyrrol-5-yl] trifluoromethanesulfonate
• CAS: 790661-74-4
• 化学式: C₁₃H₁₄F₃NO₅S₂
• 分子量: 385.385
• InChiKey: YFIQTAAOHFRAER-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  24
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  97.5
• 氢给体数：
  0
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  trifluoromethanesulfonic acid 5-methyl-1-(toluene-4-sulfonyl)-4,5-dihydro-1H-pyrrol-2-yl ester 在 palladium diacetate 正丁基锂 、 三乙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 正己烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 生成 (+/-)-{2-[5-methyl-1-(toluene-4-sulfonyl)-4,5-dihydro-1H-pyrrol-2-yl]-2-oxoethyl}phosphonic acid dimethyl ester
  参考文献：
  名称：

  Remote Stereocontrol in the Nazarov Reaction:  A New Approach to the Core of Roseophilin

  摘要：

  Three different procedures are compared to obtain properly substituted divinyl ketones in which one of the double bonds is embedded in a five-membered heterocyclic structure and therefore suitable to produce cyclopenta-fused pyrrole derivatives by the acid-catalyzed Nazarov reaction. These, on treatment with TFA, afforded 2,4-cis-disubstituted 2,3,4,5-tetrahydro-1H-cyclopenta[b]pyrrol-6-ones with high stereocontrol. One of these Nazarov products was oxidized to the corresponding 4,5-dihydro-1H-cyclopenta[b]pyrrol-6-one derivative, thus obtaining an enantiopure key intermediate in the total synthesis of roseophilin.

  DOI：

  10.1021/jo0504058
• 作为产物：
  描述：

  N-苯基双(三氟甲烷磺酰)亚胺 、 5-methyl-N-tosylpyrrolidin-2-one 在 双(三甲基硅烷基)氨基钾 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 反应 2.5h， 生成 trifluoromethanesulfonic acid 5-methyl-1-(toluene-4-sulfonyl)-4,5-dihydro-1H-pyrrol-2-yl ester
  参考文献：
  名称：

  内酰胺-、内酯-和硫内酯-衍生的烯醇三氟甲磺酸酯的羰基化铃木-宫浦偶联反应合成不对称二烯酮

  摘要：

  报道了对烯醇三氟甲磺酸酯与烯基硼酸的羰基化 Suzuki-Miyaura 交叉偶联反应合成不对称二烯酮的深入研究。发现能够在室温下、在 1 个大气压的 CO 压力下将衍生自内酰胺、内酯和硫代内酯（即分别为环烯酮胺醛、缩醛和硫代缩醛三氟甲磺酸酯）的结构不同的烯醇三氟甲磺酸酯与各种烯基硼酸偶联的条件。 –5 % 钯催化剂；羰基化产物的总产率为 50-86%。该方法允许收敛和快速制备可用于共轭加成和纳扎罗夫反应的底物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

  DOI：

  10.1002/ejoc.200601089

文献信息

• New Synthetic Approach to Cyclopenta-Fused Heterocycles Based upon a Mild Nazarov Reaction. 2. Further Studies on the Torquoselectivity
  作者：Cristina Prandi、Alessandro Ferrali、Antonio Guarna、Paolo Venturello、Ernesto G. Occhiato

  DOI：10.1021/jo0489263

  日期：2004.10.1

  Conjugated alkoxytrienes in which one of the double bonds is embedded in a heterocyclic moiety are obtained by the Pd-catalyzed coupling reaction of lactam- and lactone-derived vinyl triflates with alpha-alkoxydienylboronates. These compounds undergo a 4pi electrocyclization process (Nazarov reaction) under acidic conditions and afford cyclopenta-fused heterocycles in good yields. As a continuation of a previous study, the torquoselectivity of this Nazarov reaction has been investigated using 2-alkyl-substituted pyrrolidinone and 2- and 4-substituted delta-valerolactone derivatives. High or complete stereoselectivity has only been observed with the 2-alkyl-substituted heterocycles. Both steric and stereoelectronic effects could contribute to determining the stereoselection of the ring closure.
• Remote Stereocontrol in the Nazarov Reaction:  A New Approach to the Core of Roseophilin
  作者：Ernesto G. Occhiato、Cristina Prandi、Alessandro Ferrali、Antonio Guarna

  DOI：10.1021/jo0504058

  日期：2005.5.1

  Three different procedures are compared to obtain properly substituted divinyl ketones in which one of the double bonds is embedded in a five-membered heterocyclic structure and therefore suitable to produce cyclopenta-fused pyrrole derivatives by the acid-catalyzed Nazarov reaction. These, on treatment with TFA, afforded 2,4-cis-disubstituted 2,3,4,5-tetrahydro-1H-cyclopenta[b]pyrrol-6-ones with high stereocontrol. One of these Nazarov products was oxidized to the corresponding 4,5-dihydro-1H-cyclopenta[b]pyrrol-6-one derivative, thus obtaining an enantiopure key intermediate in the total synthesis of roseophilin.
• Carbonylative Suzuki–Miyaura Coupling Reaction of Lactam-, Lactone-, and Thiolactone-Derived Enol Triflates for the Synthesis of Unsymmetrical Dienones
  作者：Laura Bartali、Antonio Guarna、Paolo Larini、Ernesto G. Occhiato

  DOI：10.1002/ejoc.200601089

  日期：2007.5

  carbonylative Suzuki–Miyaura cross-coupling reaction of enol triflates with alkenylboronic acids for the synthesis of unsymmetrical dienones is reported. Conditions were found that enabled the coupling of structurally different enol triflates derived from lactams, lactones, and thiolactones (i.e., cyclic ketene aminal, acetal, and thioacetal triflates, respectively) with various alkenylboronic acids at

  报道了对烯醇三氟甲磺酸酯与烯基硼酸的羰基化 Suzuki-Miyaura 交叉偶联反应合成不对称二烯酮的深入研究。发现能够在室温下、在 1 个大气压的 CO 压力下将衍生自内酰胺、内酯和硫代内酯（即分别为环烯酮胺醛、缩醛和硫代缩醛三氟甲磺酸酯）的结构不同的烯醇三氟甲磺酸酯与各种烯基硼酸偶联的条件。 –5 % 钯催化剂；羰基化产物的总产率为 50-86%。该方法允许收敛和快速制备可用于共轭加成和纳扎罗夫反应的底物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)