Towards an Effective Synthesis of Difunctionalized Heptacyclo [6.6.0.0
<sup>2,6</sup>
.0
<sup>3,13</sup>
.0
<sup>4,11</sup>
.0
<sup>5,9</sup>
.0
<sup>10,14</sup>
]tetradecane: Ligand Effects on the Cage Assembly and Selective C−H Arylation Reactions
作者:Xavier Marset、Martí Recort‐Fornals、Malkaye Kpante、Adam Zieliński、Christopher Golz、Lawrence M. Wolf、Manuel Alcarazo
DOI:10.1002/adsc.202100481
日期:2021.7.20
strong π-acceptor polyfluorinated and dicationic chelating phosphines have been synthesized and evaluated in the Rh-catalysed dimerization of norbornadiene (NBD) into its thermodynamically more stable dimer, heptacyclo[6.6.0.02,6.03,13.04,11.05,9.010,14] tetradecane (HCTD). While dicationic ligands direct the dimerization towards HCTD, by the use of neutral polyfluorinated ancillary ligands endo-endo-heptacyclo
一系列强 π 受体多氟和双阳离子螯合膦已被合成并评估在 Rh 催化的降冰片二烯 (NBD) 的二聚反应中形成其热力学更稳定的二聚体七环 [6.6.0.0 2,6 .0 3,13 .0 4,11 .0 5,9 .0 10,14 ] 十四烷 (HCTD)。虽然二价阳离子配体引向HCTD二聚化,通过使用中性多氟化辅助配体的内切内-heptacyclo [8.4.0.0 2,12 0.0 3.8 0.0 4,6 0.0 5.9 0.0 11,13]十四烷 (BINOR-S) 被选择性地获得。此外,HCTD 骨架 C8 位的选择性 Pd 催化芳基化是通过使用先前连接在 C1 上的吡啶甲酰胺导向基团实现的。已经进行了理论计算以了解该区域选择性的起源。