1,1'-di(tert-butyl) 3,3'-[(6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin-2,13-diyl)dimethylene] bis(malonate) | 253682-70-1

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 1,1'-di(tert-butyl) 3,3'-[(6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin-2,13-diyl)dimethylene] bis(malonate)
• 英文别名: 3-O-tert-butyl 1-O-[[24-[[3-[(2-methylpropan-2-yl)oxy]-3-oxopropanoyl]oxymethyl]-2,5,8,15,18,21-hexaoxatricyclo[20.4.0.09,14]hexacosa-1(22),9(14),10,12,23,25-hexaen-11-yl]methyl] propanedioate
• CAS: 253682-70-1
• 化学式: C₃₆H₄₈O₁₄
• 分子量: 704.769
• InChiKey: CFKUKYQSRBEALW-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  50
• 可旋转键数：
  14
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  161
• 氢给体数：
  0
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  1,1'-di(tert-butyl) 3,3'-[(6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin-2,13-diyl)dimethylene] bis(malonate) 、 alkaline earth salt of/the/ methylsulfuric acid 在 六氟磷酸钾 、 碘 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 、 甲苯 、 乙腈 为溶剂， 反应 1.0h， 以54%的产率得到(+/-)-out,out-61,62-di(tert-butyl) 61,62-[(6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin-2,13-diyl)dimethylene] 1,2:55,60-bismethano[60]fullerene-61,61,62,62-tetracarboxylate
  参考文献：
  名称：

  Cyclophane-Type Fullerene-dibenzo[18]crown-6 Conjugates withtrans-1,trans-2, andtrans-3 Addition Patterns: Regioselective Templated Synthesis, X-Ray Crystal Structure, Ionophoric Properties, and Cation-Complexation-Dependent Redox Behavior

  摘要：

  The fullerene-crown ether conjugates (+/-)-1 to (+/-)-3 with trans-1 ((+/-)-1), trans-2 ((+/-)-2),and trans-3 ((+/-)-3) addition patterns on the C-sphere were prepared by Bingel macrocyclization. The trans-1 derivative (+/-)-1 was obtained in 30% yield, together with a small amount of (+/-)-2 by cyclization of the dibenzo[18]crown-6(DB18C6)-tethered bis-malonate 4 with C-60 (Scheme 1). When the crown-ether tether was further rigidified by K+-ion complexation, the yield and selectivity were greatly enhanced, and (+/-)-1 was obtained as the only regioisomer in 50% yield. The macrocyclization, starting from a mixture of tethered bis-malonates with anti (4) and syn (10) bisfunctionalized DB18C6 moieties, afforded the trans-1 ((+/-)-1, 15%), trans-2 ((+/-)-2, 1.5%), and trans-3 ((+/-)-3, 20%) isomers (Scheme 2). Variable-temperature H-1-NMR (VT-NMR) studies showed that the DB18C6 moiety in C-2-symmetrical (+/-)-1 cannot rotate around the two arms fixing it to the C-sphere, even at 393 K. The planar chirality of (+/-)-1 was confirmed in H-1-NMR experiments using the potassium salts of (S)-1,1'-binaphthalene-2,2'-diyl phosphate ((+/-)-(S)-19) or (+)-(1S)-camphor-10-sulfonic acid ((+)-20) as chiral shift reagents (Fig. 1). The DB18C6 tether in (+/-)-1 is a true covalent template: it is readily removed by hydrolysis or transesterification, which opens up new perspectives for molecular scaffolding using trans-1 fullerene derivatives. Characterization of the products 11 (Scheme 3) and 18 (Scheme 4) obtained by tether removal unambiguously confirmed the trans-1 addition pattern and the out-out geometry of (+/-)-1. VT-NMR Studies established that (+/-)-2 is a C-2-symmetrical out-out trans-2 and (+/-)-3 a C-1-symmetrical in-out trans-3 isomer. Upon changing from (+/-)-1 to (+/-)-3, the distance between the DB18C6 moiety and the fullerene surface increases and. correspondingly, rotation of the ionophore becomes increasingly facile. The ionophoric properties of (+/-)-1 were investigated with an ion-selective electrode membrane (Fig. 2 and Table 2), and K+ was found to form the most stable complex among the alkali-metal ions. The complex between (+/-)-1 and KPF6 was characterized by X-ray crystal-structure analysis (Figs. 3 and 4), which confirmed the close tangential orientation of the ionophore atop the fullerene surface. Addition of KPF6 to a solution of (+/-)-1 resulted in a lar-ge anodic shift (90 mV) of the first fullerene-centered reduction process, which is attributed to the electrostatic effect of the K+ ion bound in close proximity to the C-sphere (Fig. 5). Smaller anodic shifts were measured for the KPF6 complexes of (+/-)-2 (50 mV) and (+/-)-3 (40 mV), in which the distance between ionophore and fullerene surface is increased (Table 3). The effects of different alkali- and alkaline-earth-metal ion salts on the redox properties of (+/-)-1 were investigated (Table 4). These are the first-ever observed effects of cation complexation on the redox properties of the C-sphere in fullerene-crown ether conjugates.

  DOI：

  10.1002/(sici)1522-2675(19991006)82:10<1572::aid-hlca1572>3.0.co;2-b
• 作为产物：
  描述：

  丙二酸单叔丁酯 在 吡啶 、 草酰氯 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 1,1'-di(tert-butyl) 3,3'-[(6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin-2,13-diyl)dimethylene] bis(malonate)
  参考文献：
  名称：

  Cyclophane-Type Fullerene-dibenzo[18]crown-6 Conjugates withtrans-1,trans-2, andtrans-3 Addition Patterns: Regioselective Templated Synthesis, X-Ray Crystal Structure, Ionophoric Properties, and Cation-Complexation-Dependent Redox Behavior

  摘要：

  The fullerene-crown ether conjugates (+/-)-1 to (+/-)-3 with trans-1 ((+/-)-1), trans-2 ((+/-)-2),and trans-3 ((+/-)-3) addition patterns on the C-sphere were prepared by Bingel macrocyclization. The trans-1 derivative (+/-)-1 was obtained in 30% yield, together with a small amount of (+/-)-2 by cyclization of the dibenzo[18]crown-6(DB18C6)-tethered bis-malonate 4 with C-60 (Scheme 1). When the crown-ether tether was further rigidified by K+-ion complexation, the yield and selectivity were greatly enhanced, and (+/-)-1 was obtained as the only regioisomer in 50% yield. The macrocyclization, starting from a mixture of tethered bis-malonates with anti (4) and syn (10) bisfunctionalized DB18C6 moieties, afforded the trans-1 ((+/-)-1, 15%), trans-2 ((+/-)-2, 1.5%), and trans-3 ((+/-)-3, 20%) isomers (Scheme 2). Variable-temperature H-1-NMR (VT-NMR) studies showed that the DB18C6 moiety in C-2-symmetrical (+/-)-1 cannot rotate around the two arms fixing it to the C-sphere, even at 393 K. The planar chirality of (+/-)-1 was confirmed in H-1-NMR experiments using the potassium salts of (S)-1,1'-binaphthalene-2,2'-diyl phosphate ((+/-)-(S)-19) or (+)-(1S)-camphor-10-sulfonic acid ((+)-20) as chiral shift reagents (Fig. 1). The DB18C6 tether in (+/-)-1 is a true covalent template: it is readily removed by hydrolysis or transesterification, which opens up new perspectives for molecular scaffolding using trans-1 fullerene derivatives. Characterization of the products 11 (Scheme 3) and 18 (Scheme 4) obtained by tether removal unambiguously confirmed the trans-1 addition pattern and the out-out geometry of (+/-)-1. VT-NMR Studies established that (+/-)-2 is a C-2-symmetrical out-out trans-2 and (+/-)-3 a C-1-symmetrical in-out trans-3 isomer. Upon changing from (+/-)-1 to (+/-)-3, the distance between the DB18C6 moiety and the fullerene surface increases and. correspondingly, rotation of the ionophore becomes increasingly facile. The ionophoric properties of (+/-)-1 were investigated with an ion-selective electrode membrane (Fig. 2 and Table 2), and K+ was found to form the most stable complex among the alkali-metal ions. The complex between (+/-)-1 and KPF6 was characterized by X-ray crystal-structure analysis (Figs. 3 and 4), which confirmed the close tangential orientation of the ionophore atop the fullerene surface. Addition of KPF6 to a solution of (+/-)-1 resulted in a lar-ge anodic shift (90 mV) of the first fullerene-centered reduction process, which is attributed to the electrostatic effect of the K+ ion bound in close proximity to the C-sphere (Fig. 5). Smaller anodic shifts were measured for the KPF6 complexes of (+/-)-2 (50 mV) and (+/-)-3 (40 mV), in which the distance between ionophore and fullerene surface is increased (Table 3). The effects of different alkali- and alkaline-earth-metal ion salts on the redox properties of (+/-)-1 were investigated (Table 4). These are the first-ever observed effects of cation complexation on the redox properties of the C-sphere in fullerene-crown ether conjugates.

  DOI：

  10.1002/(sici)1522-2675(19991006)82:10<1572::aid-hlca1572>3.0.co;2-b