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(1S,3R,4R)-5,8-Dimethoxy-1,3-dimethyl-isochroman-4-ol | 135699-50-2

中文名称
——
中文别名
——
英文名称
(1S,3R,4R)-5,8-Dimethoxy-1,3-dimethyl-isochroman-4-ol
英文别名
(1S,3R,4R)-5,8-dimethoxy-1,3-dimethyl-3,4-dihydro-1H-isochromen-4-ol
(1S,3R,4R)-5,8-Dimethoxy-1,3-dimethyl-isochroman-4-ol化学式
CAS
135699-50-2
化学式
C13H18O4
mdl
——
分子量
238.284
InChiKey
QGGCNSNPESSETE-DAROEXNTSA-N
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

计算性质

  • 辛醇/水分配系数(LogP):
    2.22
  • 重原子数:
    17.0
  • 可旋转键数:
    2.0
  • 环数:
    2.0
  • sp3杂化的碳原子比例:
    0.54
  • 拓扑面积:
    47.92
  • 氢给体数:
    1.0
  • 氢受体数:
    4.0

反应信息

  • 作为反应物:
    描述:
    (1S,3R,4R)-5,8-Dimethoxy-1,3-dimethyl-isochroman-4-olsilver(II) oxide硝酸 作用下, 以 1,4-二氧六环 为溶剂, 反应 0.08h, 以75%的产率得到(1R,3S,4S)-3,4-dihydro-4-hydroxy-1,3-dimethylbenzo[c]pyran-5,8-quinone
    参考文献:
    名称:
    Stereoselective isomerisations of 4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolanes and their 2′-chloro-5′-methoxyphenyl analogues. Temperature-dependent diastereoselective formation of isochromanes
    摘要:
    rel-(2R,4S,5R)-4-(2–2,5–二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 1 和 rel- 2–1 差向异构混合物的立体选择性异构化(2S,4R,5R)- 和 rel-(2R,4R,5R)-4-(2-,5-二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 2 和 3 与四氯化钛在≤78℃下分别得到rel-(1R,3R,4S)-和rel-(1S,3R,4R)-4-羟基-5,8-二甲氧基-1,3-二甲基异色满烷25和30 。由于起始二氧戊环中2′-甲氧基的竞争影响,产率仅适中,并且当该基团被2′-氯取代基取代时,产率显着提高。 rel-(2R,4S,5R)-4-(2â2-Chloro-5â2-methoxy苯基)-2,5-二甲基-1,3-二氧戊环13在相似条件下顺利异构化为rel-(1R, 3R,4S)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满34作为唯一的反应产物。相比之下,C-2 差向异构体 rel-(2R,4R,5R)- 和 rel-(2S,4R,5R)-4-(2-2-氯-5-2-甲氧基苯基)-2,5-二甲基- 1,3-二氧戊环 14 和 15 各自有利于在 78°C 下形成 rel-(1R,3R,4R)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满 36,而在 95°C 时,1S 产物 35 占主导地位。二氧戊环 14 异构化速度比其 C-2 差向异构体 15 更快,并且这两个反应均受动力学而非热力学控制。
    DOI:
    10.1039/a704543c
  • 作为产物:
    描述:
    1-(2,5-二甲氧基苯基)乙醇sodium hydroxide 、 sodium tetrahydroborate 、 正丁基锂mercury(II) diacetate 作用下, 以 乙醚正己烷正戊烷 为溶剂, 反应 41.0h, 生成 (1S,3R,4R)-5,8-Dimethoxy-1,3-dimethyl-isochroman-4-ol
    参考文献:
    名称:
    Regiocontrol by Remote Substituents. A Direct Total Synthesis of Racemic Hongconin
    摘要:
    The total synthesis of hongconin (1) has been completed. Key steps include the metalation of a benzylic alcohol, the formation of a six-membered ring ether via a mercury-mediated cyclization, and the regioselective installation of the naphthalene ring by way of a Diels-Alder reaction.
    DOI:
    10.1021/jo00087a044
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文献信息

  • Stereoselective syntheses of benzo- and naphtho-pyrans by Lewis acid catalysed isomerisation of aryldioxolanes
    作者:Robin G. F. Giles、Ivan R. Green、Lorraine S. Knight、Vanessa R. Lee Son、Rodney W. Rickards、Badra S. Senanayake
    DOI:10.1039/c39910000287
    日期:——
    Phenyl- and naphthyl-dioxolanes are stereoselectively isomerised using titanium tetrachloride in methylene dichloride at –78 °C into benzo- and naphtho-pyrans.
    使用四氯化钛在二氯​​甲烷中于 –78 °C 下将苯基和萘基二氧戊环立体选择性异构化为苯并吡喃和萘并吡喃。
  • Stereoselective isomerisations of 4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolanes and their 2′-chloro-5′-methoxyphenyl analogues. Temperature-dependent diastereoselective formation of isochromanes
    作者:Robin G. F. Giles、Rodney W. Rickards、Badra S. Senanayake
    DOI:10.1039/a704543c
    日期:——
    Stereoselective isomerisations of rel-(2R,4S,5R)-4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolane 1 and the 2∶1 epimeric mixture of rel-(2S,4R,5R)- and rel-(2R,4R,5R)-4-(2′,5′-dimethoxyphenyl)-2,5-dimethyl-1,3-dioxolanes 2 and 3 with titanium tetrachloride at –78 °C afford rel-(1R,3R,4S)- and rel-(1S,3R,4R)-4-hydroxy-5,8-dimethoxy-1,3-dimethylisochromanes 25 and 30, respectively. The yields are only moderate owing to the competing influence of the 2′-methoxy group in the starting dioxolanes, and are improved significantly when this group is replaced by a 2′-chloro substituent. rel-(2R,4S,5R)-4-(2′-Chloro-5′-methoxyphenyl)-2,5-dimethyl-1,3-dioxolane 13 under similar conditions is isomerised smoothly to rel-(1R,3R,4S)-5-chloro-4-hydroxy-8-methoxy-1,3-dimethylisochromane 34 as the sole reaction product. In contrast the C-2 epimers rel-(2R,4R,5R)- and rel-(2S,4R,5R)-4-(2′-chloro-5′-methoxyphenyl)-2,5-dimethyl-1,3-dioxolanes 14 and 15 each favour the formation of rel-(1R,3R,4R)-5-chloro-4-hydroxy-8-methoxy-1,3-dimethylisochromane 36 at –78 °C, while at –95 °C the 1S product 35 predominates. Dioxolane 14 isomerises more rapidly than its C-2 epimer 15, and both these reactions are under kinetic not thermodynamic control.
    rel-(2R,4S,5R)-4-(2–2,5–二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 1 和 rel- 2–1 差向异构混合物的立体选择性异构化(2S,4R,5R)- 和 rel-(2R,4R,5R)-4-(2-,5-二甲氧基苯基)-2,5-二甲基-1,3-二氧戊环 2 和 3 与四氯化钛在≤78℃下分别得到rel-(1R,3R,4S)-和rel-(1S,3R,4R)-4-羟基-5,8-二甲氧基-1,3-二甲基异色满烷25和30 。由于起始二氧戊环中2′-甲氧基的竞争影响,产率仅适中,并且当该基团被2′-氯取代基取代时,产率显着提高。 rel-(2R,4S,5R)-4-(2â2-Chloro-5â2-methoxy苯基)-2,5-二甲基-1,3-二氧戊环13在相似条件下顺利异构化为rel-(1R, 3R,4S)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满34作为唯一的反应产物。相比之下,C-2 差向异构体 rel-(2R,4R,5R)- 和 rel-(2S,4R,5R)-4-(2-2-氯-5-2-甲氧基苯基)-2,5-二甲基- 1,3-二氧戊环 14 和 15 各自有利于在 78°C 下形成 rel-(1R,3R,4R)-5-氯-4-羟基-8-甲氧基-1,3-二甲基异色满 36,而在 95°C 时,1S 产物 35 占主导地位。二氧戊环 14 异构化速度比其 C-2 差向异构体 15 更快,并且这两个反应均受动力学而非热力学控制。
  • Regiocontrol by Remote Substituents. A Direct Total Synthesis of Racemic Hongconin
    作者:George A. Kraus、Jun Li、Mark Gordon、Jan H. Jensen
    DOI:10.1021/jo00087a044
    日期:1994.4
    The total synthesis of hongconin (1) has been completed. Key steps include the metalation of a benzylic alcohol, the formation of a six-membered ring ether via a mercury-mediated cyclization, and the regioselective installation of the naphthalene ring by way of a Diels-Alder reaction.
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