8,12-diphenylbenzoheptalene-6,7-dimethanol | 263172-06-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 8,12-diphenylbenzoheptalene-6,7-dimethanol
• 英文别名: 8,12-diphenylbenzo[a]heptalene-6,7-dimethanol；[7-(hydroxymethyl)-8,12-diphenylbenzo[a]heptalen-6-yl]methanol
• CAS: 263172-06-1
• 化学式: C₃₀H₂₄O₂
• 分子量: 416.519
• InChiKey: SWAHBDAMNVIDEP-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  32
• 可旋转键数：
  4
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

上下游信息

反应信息

• 作为反应物：
  描述：

  8,12-diphenylbenzoheptalene-6,7-dimethanol 在 三乙胺 、 三氯氧磷 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 以56%的产率得到8-chloro-1,5-diphenylbenzo[4,5]heptaleno[1,2-e][1,3,2]dioxaphosphepin 3-oxide
  参考文献：
  名称：

  Synthesis of (P)- and (M)-6,7-Bis[(diphenylphosphanyl)methyl]-8,12-diphenylbenzo[a]heptalenes - Potential Ligands for Homogeneous Asymmetric Catalysis

  摘要：

  The title bis(phosphane) ligands have been prepared starting from optically pure diisopropyl (P)- and (M)-8,22-diphenylbenzo[a]heptalene-6,7-dicarboxylaes ((P)-1b and (M)-1b) that had been obtained by HPLC separation of rac-1b on a semi-preparative Chiralcel OD column. Reduction of (P)-1b and (M)-1b with diisobutylaluminum hydride (DIBAH) gave optically pure (P)- and (M)-dimethanols 3 (Scheme 6 and Fig. 5). Unfortunately, the almost quantitative chlorination of rac-3 with PCl5 in CHCl3 at - 60 degrees led with (M)-3 to nearly complete loss of optical integrity However, mesylate formation of (P)-3. followed by phosphanylation with LiP(BH3)Ph-2 gave (P)-6 with only a small loss of optical activity. Optically pure (P)-6 was obtained by crystallization from Et2O/hexane, which removed the nearly insoluble rac-6. The pure bis(phosphane) ligands (P)-2 and (M)-2 can be liberated quantitatively from 6 by warming 6 in toluene in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO). First Rh'-catalyzed asymmetric hydrogenation reactions of (Z)-alpha-(acetamido)cinnamic acid ((Z)-14) in the presence of (P)-2 led to (R)-N-acetylphenylalanin ((R)-15) in optical purities up to 77% (see Table 1).

  DOI：

  10.1002/(sici)1522-2675(20000119)83:1<258::aid-hlca258>3.0.co;2-a
• 作为产物：
  描述：

  diisopropyl 8,12-diphenylbenzo[a]heptalene-6,7-dicarboxylate 在 二异丁基氢化铝 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 3.0h， 以66%的产率得到8,12-diphenylbenzoheptalene-6,7-dimethanol
  参考文献：
  名称：

  Synthesis of (P)- and (M)-6,7-Bis[(diphenylphosphanyl)methyl]-8,12-diphenylbenzo[a]heptalenes - Potential Ligands for Homogeneous Asymmetric Catalysis

  摘要：

  The title bis(phosphane) ligands have been prepared starting from optically pure diisopropyl (P)- and (M)-8,22-diphenylbenzo[a]heptalene-6,7-dicarboxylaes ((P)-1b and (M)-1b) that had been obtained by HPLC separation of rac-1b on a semi-preparative Chiralcel OD column. Reduction of (P)-1b and (M)-1b with diisobutylaluminum hydride (DIBAH) gave optically pure (P)- and (M)-dimethanols 3 (Scheme 6 and Fig. 5). Unfortunately, the almost quantitative chlorination of rac-3 with PCl5 in CHCl3 at - 60 degrees led with (M)-3 to nearly complete loss of optical integrity However, mesylate formation of (P)-3. followed by phosphanylation with LiP(BH3)Ph-2 gave (P)-6 with only a small loss of optical activity. Optically pure (P)-6 was obtained by crystallization from Et2O/hexane, which removed the nearly insoluble rac-6. The pure bis(phosphane) ligands (P)-2 and (M)-2 can be liberated quantitatively from 6 by warming 6 in toluene in the presence of 1,4-diazabicyclo[2.2.2]octane (DABCO). First Rh'-catalyzed asymmetric hydrogenation reactions of (Z)-alpha-(acetamido)cinnamic acid ((Z)-14) in the presence of (P)-2 led to (R)-N-acetylphenylalanin ((R)-15) in optical purities up to 77% (see Table 1).

  DOI：

  10.1002/(sici)1522-2675(20000119)83:1<258::aid-hlca258>3.0.co;2-a

文献信息

• Formation of Heptaleno[1,2-c]furans and Heptaleno[1,2-c]furanones
  作者：Peter Uebelhart、Peter Mohler、Reza-Ali Fallahpour、Hans-J�rgen Hansen

  DOI：10.1002/hlca.19950780605

  日期：1995.9.20

  into their antipodes on a Chiralcel OD column. The (P)-configuration is assigned to the heptaleno[1,2-c]furans showing a negative Cotton effect at ca. 320 nm in the CD spectrum in hexane (cf. Figs. 3–5 as well as Table 7). The (P)-configuration of (–)-6a is correlated with the established (P)-configuration of the dimethanol (–)-5avia dehydrogenation with MnO2. The degree of twisting of the heptalene

  庚烷-4,5-二甲醇4a和4d的脱氢反应在室温下与碱性MnO 2在室温下的CH 2 Cl 2中不经历双键转移（DBS）过程，导致分别形成相应的庚二酮[1,2- c ]呋喃6a和6d，以及分别形成相应的庚二酮[1,2 - c ]呋喃-3-酮7a和7d（参见方案2和8）。两种产品类型的形成必然涉及DBS流程（请参阅方案7）。的DBS异构体的脱氢反应4a中，即，图5a，具有的MnO 2在CH 2氯2在室温下的结果，除了图6A和7A，在heptaleno [1,2的形成Ç ] -furan- 1-酮8a和少量的庚烯-4,5-二甲醛9a（参见方案3）。在CH 2 Cl中用MnO 2脱氢时，具有庚烯骨架CC键固定位置的苯并[ a ]庚二烯-6,7-二甲醇4c在图2中，仅给出相应的呋喃酮11b（方案4）。由[ 2 ħ 2 ]在C（7）的甲醇函数的-labelling，它可以表明，呋喃酮的形成发生在相应的乳醇的阶段[3-