(Z)-2,6-Dimethyl-3,5-heptadien-1-ol | 43160-59-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (Z)-2,6-Dimethyl-3,5-heptadien-1-ol
• 英文别名: (Z)-2,6-dimethyl-2,5-heptadien-1-ol；(Z)-2,6-dimethylhepta-2,5-dien-1-ol；(Z)-2,6-dimethyl-hepta-2,5-dien-1-ol；(2Z)-2,6-dimethylhepta-2,5-dien-1-ol
• CAS: 43160-59-4
• 化学式: C₉H₁₆O
• 分子量: 140.225
• InChiKey: RTAAHZJTBDXDOL-TWGQIWQCSA-N

物化性质

• 沸点：
  105 °C(Press: 15 Torr)
• 密度：
  0.868±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.6
• 重原子数：
  10
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  20.2
• 氢给体数：
  1
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (Z)-2,6-Dimethyl-3,5-heptadien-1-ol 在 titanium(IV) isopropylate 、 2,3,5-三甲基吡啶 、 叔丁基过氧化氢 、 草酰氯 、 ammonium chloride 、 D-(-)-酒石酸二异丙酯 、 二甲基亚砜 、 三乙胺 、 三氟乙酸 、 十二硫醇 作用下， 以 二氯甲烷 、 二甲基亚砜 为溶剂， 反应 39.17h， 生成
  参考文献：
  名称：

  Total Syntheses of the Cytotoxic Marine Natural Product, Aplysiapyranoid C¹

  摘要：

  The first total syntheses of the cytotoxic marine natural product, aplysiapyranoid C, 1c, are reported. The Wittig reaction of 4-methyl-3-pentenyltriphenylphosphorane with the THP ether of hydroxyacetone gave in 88% yield the Z-alkene 4 which was hydrolyzed to the alcohol 5 in 72% yield. Sharpless asymmetric epoxidation of 5 afforded the epoxy alcohol 6 in 91% yield and 81% ee, Opening of the epoxide of 6 with ammonium chloride in DMSO gave in 76% yield the chloro diol 7 which was converted to the primary TBS ether 8 in 95% yield. Opening of the epoxy alcohol 6 with HCl and Ti(OiPr)(4) afforded the desired chloro diol 7 as the minor product along with the rearranged chloromethyl diol 9. This compound is presumably formed by opening of the protonated epoxide to give a butenyl cation which rearranges to the cyclopropylcarbinyl cation and is then trapped by chloride ion at the unsubstituted cyclopropyl carbon, regenerating the alkene. Cyclization of the TBS ether 8 with tetrabromocyclohexadienone (TBCO) afforded a mixture of all four possible cyclization products, the desired tetrahydropyrans 11a,b and the tetrahydrofurans 12a,b with the former being isolated in 70% yield. Hydrolysis of the TBS ether afforded the primary alcohols from which the desired isomer, 13, could be isolated (24% overall from 8), Swern oxidation furnished the aldehyde 14 which was subjected to the Takai chlorovinylation to give a mixture of aplysiapyranoid C Ic and the reduced product, dechloroaplysiapyranoid C 15. This dechlorination under these conditions is quite unusual. A second synthesis of aplysiapyranoid C avoided this problem. Selective protection of the more hindered tertiary alcohol of the chloro diol 7 afforded the primary alcohol 16 in which the tertiary alcohol was protected as the triethylsilyl ether. Swern oxidation, Takai reaction, and desilylation gave the dichloro alkenol 17 in 52% overall yield. In this case, only a small amount of the corresponding dechlorinated product was obtained. Final cyclization of 17 with TBCO afforded aplysiapyranoid C Ic as the major product in an isolated yield of 43%. Thus we have completed two total syntheses of aplysiapyranoid C Ic from the simple bromide 2 in eight or nine steps and good overall yield.

  DOI：

  10.1021/jo972228j
• 作为产物：
  描述：

  5-溴-2-甲基-2-戊烯 在 tetramethylpiperidine 、 4-甲基苯磺酸吡啶 、 双(三甲基硅烷基)氨基钾 作用下， 以 四氢呋喃 、 六甲基磷酰三胺 、 乙醇 、 乙腈 为溶剂， 反应 32.3h， 生成 (Z)-2,6-Dimethyl-3,5-heptadien-1-ol
  参考文献：
  名称：

  Total Syntheses of the Cytotoxic Marine Natural Product, Aplysiapyranoid C¹

  摘要：

  The first total syntheses of the cytotoxic marine natural product, aplysiapyranoid C, 1c, are reported. The Wittig reaction of 4-methyl-3-pentenyltriphenylphosphorane with the THP ether of hydroxyacetone gave in 88% yield the Z-alkene 4 which was hydrolyzed to the alcohol 5 in 72% yield. Sharpless asymmetric epoxidation of 5 afforded the epoxy alcohol 6 in 91% yield and 81% ee, Opening of the epoxide of 6 with ammonium chloride in DMSO gave in 76% yield the chloro diol 7 which was converted to the primary TBS ether 8 in 95% yield. Opening of the epoxy alcohol 6 with HCl and Ti(OiPr)(4) afforded the desired chloro diol 7 as the minor product along with the rearranged chloromethyl diol 9. This compound is presumably formed by opening of the protonated epoxide to give a butenyl cation which rearranges to the cyclopropylcarbinyl cation and is then trapped by chloride ion at the unsubstituted cyclopropyl carbon, regenerating the alkene. Cyclization of the TBS ether 8 with tetrabromocyclohexadienone (TBCO) afforded a mixture of all four possible cyclization products, the desired tetrahydropyrans 11a,b and the tetrahydrofurans 12a,b with the former being isolated in 70% yield. Hydrolysis of the TBS ether afforded the primary alcohols from which the desired isomer, 13, could be isolated (24% overall from 8), Swern oxidation furnished the aldehyde 14 which was subjected to the Takai chlorovinylation to give a mixture of aplysiapyranoid C Ic and the reduced product, dechloroaplysiapyranoid C 15. This dechlorination under these conditions is quite unusual. A second synthesis of aplysiapyranoid C avoided this problem. Selective protection of the more hindered tertiary alcohol of the chloro diol 7 afforded the primary alcohol 16 in which the tertiary alcohol was protected as the triethylsilyl ether. Swern oxidation, Takai reaction, and desilylation gave the dichloro alkenol 17 in 52% overall yield. In this case, only a small amount of the corresponding dechlorinated product was obtained. Final cyclization of 17 with TBCO afforded aplysiapyranoid C Ic as the major product in an isolated yield of 43%. Thus we have completed two total syntheses of aplysiapyranoid C Ic from the simple bromide 2 in eight or nine steps and good overall yield.

  DOI：

  10.1021/jo972228j

文献信息

• Palladium catalyzed coupling of organostannanes with vinyl epoxides
  作者：David R. Tueting、Antonio M. Echavarren、J.K. Stille

  DOI：10.1016/0040-4020(89)80010-9

  日期：1989.1

  The coupling reaction of organotin reagents with vinyl epoxides, catalyzed by palladium, takes place at ambient temperatures, regioselectively, giving predominately the 1,4-addition product. Both aryl- and vinylstannanes undergo coupling in high yields, while acetylenic, allylic and benzylic tin reagents either give low yields or fail to couple. Although the double bond geometry in the vinylstannane

  钯催化的有机锡试剂与乙烯基环氧化物的偶联反应在环境温度下进行区域选择性的反应，主要产生1,4-加成产物。芳基和乙烯基锡烷均以高收率偶联，而炔属，烯丙基和苄基锡试剂收率较低或无法偶联。尽管在偶联产物中保持了乙烯基锡烷配偶中的双键几何形状，但是来自乙烯基环氧化物的双键几何形状是E / Z混合物。在与环状1，3-二烯单环氧化物的偶联反应中，该反应是立体异构的，有机基团从锡配偶体偶联成反式至醇官能团。
• New Syntheses of (<i>R</i>)-(+)-3-Acetoxy-2,6-dimethyl-l,5-heptadiene, the Pheromone of the Comstock Mealybug
  作者：Naoshi Nakagawa、Kenji Mori

  DOI：10.1080/00021369.1984.10866566

  日期：1984.11

  L-Phenylalanine was converted to optically impure (R)-(+)-2,6-dimethyl-1,5-heptadien-3-ol 2 (19% e.e.) .(R)-(+)-2 (96% e.e.) was prepared by a kinetic resolution of (±)-2. Acetylation of the pure (R)-(+ )- 2 gave the pheromone of the Comstock mealybug ( Pseudococcus comstockii KUWANA) [(R)-(+)-1].

  L-苯丙氨酸被转化为光学纯度不高的(R)-(+)-2,6-二甲基-1,5-七烯-3-醇2 (19% e.e.)。通过对(±)-2进行动力学分辨，制备得到了(R)-(+)-2 (96% e.e.)。纯的(R)-(+)-2经过醋酰化反应，得到了康斯托克粉虱(Pseudococcus comstockii KUWANA) 的信息素[(R)-(+)-1]。
• A tellurium transposition route to allylic alcohols: overcoming some limitations of the Sharpless-Katsuki asymmetric epoxidation
  作者：Donald C. Dittmer、Robert P. Discordia、Yanzhi Zhang、Christopher K. Murphy、Archana Kumar、Aurora S. Pepito、Yuesheng Wang

  DOI：10.1021/jo00055a029

  日期：1993.1

  Good yields of enantiomeric allylic alcohols can be obtained in high enantiomeric excess (ee) by combining the Sharpless-Katsuki asymmetric epoxidation process (SAE) with tellurium chemistry. The advantages of the tellurium process are as follows: (1) the 50% yield limitation on the allylic alcohol in the Sharpless kinetic resolution (SKR) can be overcome; (2) allylic tertiary alcohols which are unsatisfactory substrates in the SKR can be obtained in high optical purity; (3) optically active secondary allylic alcohols with tertiary alkyl substituents (e.g. tert-butyl) at C-1 can be obtained in high ee; (4) optically active sterically congested cis secondary alcohols can be obtained in high ee; and (5) the nuisance of the slow SAE of some vinyl carbinols can be avoided. The key step in the reaction sequence is either a stereospecific 1,3-trans position of double bond and alcohol functionalities or an inversion of the alcohol configuration with concomitant deoxygenation of the epoxide function in epoxy alcohols. Trans secondary allylic alcohols can be converted to cis secondary allylic alcohols by way of erythro epoxy alcohols (glycidols); threo glycidyl derivatives are converted to trans secondary allylic alcohols. These transformations are accomplished by the action of telluride ion, generated in situ from the element, on a glycidyl sulfonate ester. Reduction of elemental Te is conveniently done with rongalite (HOCH2SO2Na) in an aqueous medium. This method is satisfactory when Te2- is required to attack a primary carbon site of a glycidyl sulfonate. In cases where Te2- is required to attack a secondary carbon site, reduction of the tellurium must be done with NaBH4 or LiEt3BH. Elemental tellurium is precipitated during the course of the reactions and can be recovered and reused.
• TUETING, DAVID R.;ECHAVARREN, ANTONIO M.;STILLE, J. K., TETRAHEDRON, 45,(1989) N, C. 979-992
  作者：TUETING, DAVID R.、ECHAVARREN, ANTONIO M.、STILLE, J. K.

  DOI：——

  日期：——