(R,E)-5,9-dimethyldeca-4,8-dien-3-yl picolinate | 1428377-70-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (R,E)-5,9-dimethyldeca-4,8-dien-3-yl picolinate
• 英文别名: [(3R,4E)-5,9-dimethyldeca-4,8-dien-3-yl] pyridine-2-carboxylate
• CAS: 1428377-70-1
• 化学式: C₁₈H₂₅NO₂
• 分子量: 287.402
• InChiKey: MTRTWLOAGSEJHQ-QJPKHSJYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.3
• 重原子数：
  21
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.44
• 拓扑面积：
  39.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  (E)-3,7-二甲基-2,6-辛二烯醛 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 3.5h， 生成 (R,E)-5,9-dimethyldeca-4,8-dien-3-yl picolinate 、 (S,E)-5,9-dimethyldeca-4,8-dien-3-yl picolinate
  参考文献：
  名称：

  Allylic Substitution for Construction of a Chiral Quaternary Carbon Possessing an Aryl Group

  摘要：

  Phenylcopper reagents derived from 2:1 PhMgBr/Cu(acac)(2) and 3:1:1 PhMgBr/Cu(acac)(2)/ZnI2 were found to be highly reactive and regioselective in the allylic substitution of gamma,gamma-disubstituted secondary allylic picolinates designed for construction of a quaternary carbon, whereas the previous 2:1 ArMgBr/CuBr center dot Me2S reagent and that with ZnX2 were unsuccessful. The generality of the ArMgBr/Cu(acac)(2) reagent was examined with enantiomerically enriched allylic picolinates, which furnished quaternary carbons with high efficiency in >92% regioselectivity and >97% chirality transfer. Two cyclohexanes with a quaternary carbon were synthesized by using these reagents.

  DOI：

  10.1021/jo400248y

文献信息

• Allylic Substitution for Construction of a Chiral Quaternary Carbon Possessing an Aryl Group
  作者：Chao Feng、Yuichi Kobayashi

  DOI：10.1021/jo400248y

  日期：2013.4.19

  Phenylcopper reagents derived from 2:1 PhMgBr/Cu(acac)(2) and 3:1:1 PhMgBr/Cu(acac)(2)/ZnI2 were found to be highly reactive and regioselective in the allylic substitution of gamma,gamma-disubstituted secondary allylic picolinates designed for construction of a quaternary carbon, whereas the previous 2:1 ArMgBr/CuBr center dot Me2S reagent and that with ZnX2 were unsuccessful. The generality of the ArMgBr/Cu(acac)(2) reagent was examined with enantiomerically enriched allylic picolinates, which furnished quaternary carbons with high efficiency in >92% regioselectivity and >97% chirality transfer. Two cyclohexanes with a quaternary carbon were synthesized by using these reagents.