6-chloro-3,4-dihydro-2H-1-benzopyran-3-ol | 136513-98-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 6-chloro-3,4-dihydro-2H-1-benzopyran-3-ol
• 英文别名: 6-chloro-3,4-dihydro-2H-chromen-3-ol
• CAS: 136513-98-9
• 化学式: C₉H₉ClO₂
• 分子量: 184.622
• InChiKey: ZQBMGHPJPAEEHF-UHFFFAOYSA-N

物化性质

• 沸点：
  323.3±42.0 °C(Predicted)
• 密度：
  1.355±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.9
• 重原子数：
  12
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

安全信息

• 海关编码：
  2932999099

反应信息

• 作为产物：
  描述：

  在 水 、 molybdenum hexacarbonyl 作用下， 以 乙腈 为溶剂， 反应 12.0h， 以76%的产率得到6-chloro-3,4-dihydro-2H-1-benzopyran-3-ol
  参考文献：
  名称：

  一种合成苯并吡喃3醇衍生物类化合物的方法

  摘要：

  本发明涉及化合物制备技术领域，公开了一种合成苯并吡喃3醇衍生物类化合物的方法，包括如下步骤：（1）将化合物I与钯催化剂、氧化剂和溶剂混合，在70~130℃下密闭搅拌反应1~24h；对步骤（1）所得混合液进行后处理得到中间产物II；将中间产物II与催化剂、乙腈和水混合，用氮气置换空气后，在85~95℃下密闭搅拌反应1~24h；对步骤（3）所得混合液进行后处理得到终产物III苯并吡喃3醇衍生物类化合物。本发明通过交叉脱氢偶联直接进行分子内C(sp3)‑H芳基化，合成苯并吡喃3醇衍生物类化合物，路线简单，收率较高，普适性好，反应条件温和，选择性高。

  公开号：

  CN111423405B

文献信息

• A New and Facile Synthesis of Chroman-3-ols, 3,4-Dihydro-2H-[1]-Benzopyran-3-ols
  作者：V. Satyanarayana、Ch. Prasad Rao、G. L. David Krupadanam、G. Srimannarayana

  DOI：10.1080/00397919108016418

  日期：1991.7

  Abstract o-Allyl phenols react with m-chloroperoxybenzoic acid (m-CPBA) in dry chloroform to give chroman-3-ols in a single step in good yields (93–96%).

  摘要 邻烯丙基苯酚在无水氯仿中与间氯过氧苯甲酸 (m-CPBA) 反应，一步生成色满-3-醇，产率高（93-96%）。
• Preparation and chemistry of the active copper species derived from CuI.cntdot.PBu3, CuI.cntdot.PPh3, and CuCN.cntdot.nLiX complexes
  作者：Reuben D. Rieke、Douglas E. Stack、Bryan T. Dawson、Tse Chong Wu

  DOI：10.1021/jo00061a023

  日期：1993.4

  The preparation of highly reactive copper by the reduction of CuI.PBu3, CuI.PPh3, and CuCN-nLiX copper(I) complexes with the preformed lithium naphthalenide is described. It was found, for all three Cu(I) complexes, that the reduction temperature proved crucial to reactivity of the zerovalent copper species as measured by the ability of the active copper to undergo oxidative addition to carbon-halogen bonds. The lower the reduction temperature the more reactive the zerovalent copper species becomes. The low-temperature reduction allows for the formation of highly reactive copper from CuCN.nLiX complexes. This active copper species undergoes oxidative addition to alkyl and aryl bromides in high yield to form the corresponding organocopper reagent directly without the need for other organometallic precursors. Moreover, the alkyl and aryl bromides can contain a wide range of functional groups as they are not affected in the oxidative addition step. The functionalized organocopper reagents derived from CuCN-nLiX based active copper are the reagent of choice in the cross-coupling of acid chlorides to produce ketones as well as the 1,4-addition reaction with enones. The lack of phosphines associated with organocopper reagents stemming from CuCN-based active copper makes product isolation more facile. While the functionalized organocopper reagents derived from CuCN.nLiX complexes provide higher isolated yields in the formentioned reactions, they are not nucleophilic enough to undergo inter- or intramolecular epoxide openings. The use of both CuI.PBu3 and CuI.PPh3 Cu(I) complexes in the intramolecular epoxide openings of aryl bromoepoxides is presented. The regiochemistry, endo vs. exo, was shown to be affected by the Cu(I) complex used to generate the active copper species, the solvent, and the pattern of substitution around the epoxide moiety. The active copper species as well as the the resulting organocopper reagents derived from both CuI.PBu3 and CuCN-nLiX were investigated using both P-31 and C-13 NMR. The data from P-31 NMR investigation held some evidence for a highly reduced copper(0)-phosphine complex while the C-13 studies of the CuCN-nLiX complexes indicated that these species have limited solubility in THF.
• BRADSHER C. K.; REAMES D. C., J. ORG. CHEM., 1978, 43, NO 19, 3800-3802
  作者：BRADSHER C. K.、 REAMES D. C.

  DOI：——

  日期：——
• 一种合成苯并吡喃3醇衍生物类化合物的方法
  申请人：浙江工业大学

  公开号：CN111423405B

  公开（公告）日：2021-11-26

  本发明涉及化合物制备技术领域，公开了一种合成苯并吡喃3醇衍生物类化合物的方法，包括如下步骤：（1）将化合物I与钯催化剂、氧化剂和溶剂混合，在70~130℃下密闭搅拌反应1~24h；对步骤（1）所得混合液进行后处理得到中间产物II；将中间产物II与催化剂、乙腈和水混合，用氮气置换空气后，在85~95℃下密闭搅拌反应1~24h；对步骤（3）所得混合液进行后处理得到终产物III苯并吡喃3醇衍生物类化合物。本发明通过交叉脱氢偶联直接进行分子内C(sp3)‑H芳基化，合成苯并吡喃3醇衍生物类化合物，路线简单，收率较高，普适性好，反应条件温和，选择性高。