摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词

S-(-)-1,1-difluoro-2-octanol | 123986-84-5

中文名称
——
中文别名
——
英文名称
S-(-)-1,1-difluoro-2-octanol
英文别名
(2S)-1,1-difluorooctan-2-ol
S-(-)-1,1-difluoro-2-octanol化学式
CAS
123986-84-5
化学式
C8H16F2O
mdl
——
分子量
166.211
InChiKey
VCEJTSPGGYAMFU-ZETCQYMHSA-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):
    3.4
  • 重原子数:
    11
  • 可旋转键数:
    6
  • 环数:
    0.0
  • sp3杂化的碳原子比例:
    1.0
  • 拓扑面积:
    20.2
  • 氢给体数:
    1
  • 氢受体数:
    3

反应信息

  • 作为产物:
    描述:
    1,1-二氟-3-辛炔-2-酮 在 palladium on activated charcoal (-)-B-isopinocampheyl-9-borabicyclo<3.3.1>nonane 、 氢气 作用下, 以 四氢呋喃 为溶剂, 反应 4.0h, 生成 S-(-)-1,1-difluoro-2-octanol
    参考文献:
    名称:
    选择性减少。52.高效不对称还原α-炔α'氟烷基酮的任一与乙-chlorodiisopinocampheylborane或乙高对映体纯度-isopinocampheyl -9-硼杂双环[3.3.1]壬烷。氟基团在这种还原反应中的影响
    摘要:
    ( - ) -与所述不对称还原前手性α-炔α'氟烷基酮的的系统研究乙-chlorodiisopinocampheylborane [( - ) - DIP-氯化物,1 ]和( - ) -乙-isopinocampheyl -9-硼杂双环[3.3.1 .1]壬烷(R -Alpine-Borane,2)显示,使用这两种试剂,都可以在很高的ee(92->-99%)中还原全氟烷基炔酮。例如,1,1,1-三氟-4-苯基-3-丁炔-2-酮,1,1,1,2,2-五氟-5-苯基-4-戊炔-3-酮和4, 4,5,5,6,6,6-七氟-1-苯基-1-己炔-3-酮在-25°C下EE中在0.25-2 h内以98%,96%和98%的比例被还原为1 ee分别为94%。相同的酮减少2在纯净条件下,在室温下1-4小时内,ee分别为98%,97%和96%。相似地,1,1,1-三氟-3-辛炔-2-酮,1,1,1,2,2-五氟-4-壬炔-3-酮和1
    DOI:
    10.1016/0957-4166(94)80056-1
点击查看最新优质反应信息

文献信息

  • Selective reductions. 53. Asymmetric reduction of α-fluoromethyl ketones with B-chlorodiisopinocampheylborane and B-isopinocampheyl-9-borabicyclo[3.3.1]nonane. Combined electronic and steric contributions to the enantiocontrol process
    作者:P.Veeraraghavan Ramachandran、Aleksandar V. Teodorovic'、Baoqing Gong、Herbert C. Brown
    DOI:10.1016/0957-4166(94)80057-x
    日期:1994.6
    A systematic study of the asymmetric reduction of aryl and alkyl α-fluoroalkyl ketones with (−)-diisopinocampheylchloroborane ((−)-DIP-Chloride, 1), and (−)-B-isopinocampheyl-9-borabicyclo[3.3.1]nonane (R-Alpine-Borane, 2) has been made. In the case of reagent 1, the direction of asymmetric induction in the chiral reduction of aryl trifluoromethyl ketones differs from that of the corresponding mono-
    ( - ) -芳基的不对称还原,并与烷基α氟烷基酮的系统性研究diisopinocampheylchloroborane(( - ) - DIP-氯化物,1),和( - ) -乙-isopinocampheyl-9-硼杂双环[3.3.1]制备了壬烷(R -Alpine-Borane,2)。在试剂1的情况下,在芳基三氟甲基酮的手性还原中的不对称诱导的方向不同于相应的单和二氟甲基酮的方向。例如,在室温下的纯净条件下,在95%ee和85%ee中,2-氟和2,2-二氟苯乙酮分别被1还原为R-醇,而2,2,2-三氟苯乙酮被还原了,到S-酒精含量为90%的ee。尽管DIP-Chloride可以在不良ee中还原未受阻的前手性二烷基酮,但根据酮中存在的α-氟原子的数量,烷基α-氟代烷基酮在改良的ee中会降低。单氟甲基酮在R-异构体中提供中等的ee,而在相反的异构体中,二氟和三氟甲基酮的ee降低到中等。例如
  • A microbially-based approach for the synthesis of chiral secondary alcohols bearing the difluoromethyl or chlorodifluoromethyl group
    作者:Tomoya Kitazume、Masatomo Asai、Takashi Tsukamoto、Takashi Yamazaki
    DOI:10.1016/s0022-1139(00)81174-4
    日期:1992.3
    A synthetic approach to both enantiomers of the secondary alcohols [Ph(CH2)n CH(OH)CXF2 (n = 0-2) C6H13(CH2)n CH(OH)CFX2 (n = 0 or 2) and CXF2CH(OH)CH2CO2Et [X = H or Cl], involving the stereoselective hydrolysis of ester derivatives, is described. The absolute configurations of these difluoromethylated or chlorodifluoromethylated molecules were determined.
  • Stereoselective synthesis of fluorinated materials catalyzed by an antibody
    作者:Tomoya Kitazume、Jenq Tain Lin、Mitsunori Takeda、Takashi Yamazaki
    DOI:10.1021/ja00006a032
    日期:1991.3
    A monoclonal antibody, elicited by a transition-state analogue for the hydrolysis of fluorinated esters, acted as an enzymelike catalyst for the preparation of chiral fluorinated compounds. The syntheses of (R)- or (S)-1-(fluoroalkyl)alkanols and an allylic alcohol possessing a trifluoromethyl group in high optical purity (> 98% enantiomeric excess (ee)) by antibody-derived reagents are described. The role of molecular recognition by antibody reagents and its importance to the preparation of optically pure materials is described. Significantly, it has been found that a fluoromethyl group on the stereogenic center or an acyloyl group enhanced the optical purity of the resultant products.
  • KITAZUME, TOMOYA;LIN, JENQ TAIN;TAKEDA, MITSUNORI;YAMAZAKI, TAKASHI, J. AMER. CHEM. SOC., 113,(1991) N, C. 2123-2126
    作者:KITAZUME, TOMOYA、LIN, JENQ TAIN、TAKEDA, MITSUNORI、YAMAZAKI, TAKASHI
    DOI:——
    日期:——
  • Selective reductions. 52. Efficient asymmetric reduction of α-acetylenic α′-fluoroalkyl ketones with either B-chlorodiisopinocampheylborane or B-isopinocampheyl-9-borabicyclo[3.3.1]nonane in high enantiomeric purity. The influence of fluoro groups in such reductions
    作者:P.Veeraraghavan Ramachandran、Baoqing Gong、Aleksandar V. Teodorovic'、Herbert C. Brown
    DOI:10.1016/0957-4166(94)80056-1
    日期:1994.6
    whereas 1 is ineffective for these types of ketones. In all of the above reductions, the fluoroalkyl group acts as the enantiocontrolling group with one exception. A remarkable inversion in selectivity in the reduction of monofluoromethyl acetylenic ketones with 1 is observed as compared to the reduction with 2, indicating that in the transition state the acetylenic moiety acts as the enantiocontrolling
    ( - ) -与所述不对称还原前手性α-炔α'氟烷基酮的的系统研究乙-chlorodiisopinocampheylborane [( - ) - DIP-氯化物,1 ]和( - ) -乙-isopinocampheyl -9-硼杂双环[3.3.1 .1]壬烷(R -Alpine-Borane,2)显示,使用这两种试剂,都可以在很高的ee(92->-99%)中还原全氟烷基炔酮。例如,1,1,1-三氟-4-苯基-3-丁炔-2-酮,1,1,1,2,2-五氟-5-苯基-4-戊炔-3-酮和4, 4,5,5,6,6,6-七氟-1-苯基-1-己炔-3-酮在-25°C下EE中在0.25-2 h内以98%,96%和98%的比例被还原为1 ee分别为94%。相同的酮减少2在纯净条件下,在室温下1-4小时内,ee分别为98%,97%和96%。相似地,1,1,1-三氟-3-辛炔-2-酮,1,1,1,2,2-五氟-4-壬炔-3-酮和1
查看更多