Kundu Gargi, Balayan Kajal, Tothadi Srinu, Sen Sakya S
Inorganic Chemistry and Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Inorg Chem. 2022 Aug 22;61(33):12991-12997. doi: 10.1021/acs.inorgchem.2c00611. Epub 2022 Aug 5.
The reaction of six-membered saturated NHC [1,3-di(2,6-diisopropylphenyl) tetrahydropyrimidine-2-ylidene; henceforth abbreviated as 6-SIDipp] with PhBCl yields a Lewis base adduct, 6-SIDipp·PhBCl (), which readily undergoes nucleophilic substitution reaction with AgNO, leading to the single () and double () substitution of both chlorides with ONO moieties at the boron atom. The reaction of with 1 equiv of AlCl resulted in a borenium cation of composition [6-SIDipp·B(Ph)Cl] () with AlCl as the counteranion. Although borenium cations with different substituents on boron have been reported, a structurally characterized phenylchloroborenium cation remains unknown. Similarly, the reaction of with triflic acid provides the first representative of a new class of borenium cations bearing one hydroxyl and one phenyl group on boron (), a cationic analogue of borinic acid.
六元饱和氮杂环卡宾[1,3-二(2,6-二异丙基苯基)四氢嘧啶-2-亚基；以下简称为6-SIDipp]与PhBCl反应生成一种路易斯碱加合物6-SIDipp·PhBCl（），它很容易与AgNO发生亲核取代反应，导致两个氯原子在硼原子处被ONO部分单取代（）和双取代（）。与1当量的AlCl反应生成了组成为[6-SIDipp·B(Ph)Cl]（）的硼正离子，以AlCl作为抗衡阴离子。尽管已经报道了硼上带有不同取代基的硼正离子，但结构表征的苯基氯硼正离子仍然未知。同样，与三氟甲磺酸反应提供了一类新型硼正离子的首个代表，该硼正离子在硼上带有一个羟基和一个苯基（），是硼酸的阳离子类似物。
