rel-(2R,3R,4R)-4-chloro-3-ethyl-1,2-piperidinedicarboxylic acid dimethyl ester

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: rel-(2R,3R,4R)-4-chloro-3-ethyl-1,2-piperidinedicarboxylic acid dimethyl ester
• 英文别名: dimethyl (2S,3S,4S)-4-chloro-3-ethylpiperidine-1,2-dicarboxylate
• 化学式: C₁₁H₁₈ClNO₄
• 分子量: 263.721
• InChiKey: WVOLZLAENTVQRS-VGMNWLOBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  17
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.82
• 拓扑面积：
  55.8
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  rel-(2R,3R,4R)-4-chloro-3-ethyl-1,2-piperidinedicarboxylic acid dimethyl ester 在 三甲基氯硅烷 、 sodium iodide 作用下， 以 乙腈 为溶剂， 反应 3.0h， 以71%的产率得到rel-(2R,3R,4R)-4-chloro-3-ethyl-2-piperidinecarboxylic acid methyl ester
  参考文献：
  名称：

  Tin tetrachloride-induced π-cyclizations of glycine cation equivalents to substituted pipecolic acid derivatives

  摘要：

  Cationic pi-cyclization reactions of N-(3-alkenyl)-N-(methoxycarbonyl)acetoxyglycine esters induced by tin tetrachloride in dichloromethane are described. Reactions started and quenched with water at -78-degrees-C mainly yield cis-4-hydroxypipecolic esters, whereas reactions quenched after warm-up to room temperature provide trans-4-chloropipecolic esters as major products. A mechanistic scheme is advanced which adequately explains these results. The essentials are a rapid cationic aza-Cope equilibrium of the incipient iminium cation, and participation of the ester moiety through formation of a relatively stable bicyclic dioxycarbenium cation as pivotal intermediate.

  DOI：

  10.1016/s0040-4020(01)86443-7
• 作为产物：
  描述：

  反式-3-己烯-1-醇 在 吡啶 、 4-二甲氨基吡啶 、 sodium azide 、 水 、 四氯化锡 、 三乙胺 、 三苯基膦 作用下， 以 四氢呋喃 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 苯 为溶剂， 反应 46.75h， 生成 rel-(2R,3R,4R)-4-chloro-3-ethyl-1,2-piperidinedicarboxylic acid dimethyl ester
  参考文献：
  名称：

  Tin tetrachloride-induced π-cyclizations of glycine cation equivalents to substituted pipecolic acid derivatives

  摘要：

  Cationic pi-cyclization reactions of N-(3-alkenyl)-N-(methoxycarbonyl)acetoxyglycine esters induced by tin tetrachloride in dichloromethane are described. Reactions started and quenched with water at -78-degrees-C mainly yield cis-4-hydroxypipecolic esters, whereas reactions quenched after warm-up to room temperature provide trans-4-chloropipecolic esters as major products. A mechanistic scheme is advanced which adequately explains these results. The essentials are a rapid cationic aza-Cope equilibrium of the incipient iminium cation, and participation of the ester moiety through formation of a relatively stable bicyclic dioxycarbenium cation as pivotal intermediate.

  DOI：

  10.1016/s0040-4020(01)86443-7

文献信息

• Udding, Jan H.; Tuijp, C. (Kees) J. M.; Hiemstra, Henk, journal of the chemical society-perkin transactions 2, 1992, # 6, p. 857 - 858
  作者：Udding, Jan H.、Tuijp, C. (Kees) J. M.、Hiemstra, Henk、Speckamp, W. Nico

  DOI：——

  日期：——
• Tin tetrachloride-induced π-cyclizations of glycine cation equivalents to substituted pipecolic acid derivatives
  作者：Peter M Esch、Ilona M Boska、Henk Hiemstra、Richard F de Boer、W.Nico Speckamp

  DOI：10.1016/s0040-4020(01)86443-7

  日期：1991.1

  Cationic pi-cyclization reactions of N-(3-alkenyl)-N-(methoxycarbonyl)acetoxyglycine esters induced by tin tetrachloride in dichloromethane are described. Reactions started and quenched with water at -78-degrees-C mainly yield cis-4-hydroxypipecolic esters, whereas reactions quenched after warm-up to room temperature provide trans-4-chloropipecolic esters as major products. A mechanistic scheme is advanced which adequately explains these results. The essentials are a rapid cationic aza-Cope equilibrium of the incipient iminium cation, and participation of the ester moiety through formation of a relatively stable bicyclic dioxycarbenium cation as pivotal intermediate.