Polyfluoroorganotrifluoroborates and -difluoroboranes: interesting materials in fluoroorgano and fluoroorgano-element chemistry
摘要:
The aimed introduction of the polyfluoroorgano groups (4-C5F4N), C6F13C2H4, and C2F5 into methoxy group-containing boron electrophiles is reported. The new compounds obtained after transformations K[(4-C5F4N)BF3], (4-C5F4N)BF2, K[C6F13C2H4BF3], C6F13C2H4BF2, K[(C2F5)(2)B(OMe)(2)], and K[(C2F5)(2)BF2] were isolated and characterised. Additionally some of their precursors as there are Li(4-C5F4N), Li[(4-C5F4N)B(OMe)(3)], (4-C5F4N)B(OH)(2) and the by-products Li[(4-C5F4N)(2)B(OMe)(2)], (4-C5F4NOOH, and K[(4-C5F4N)(2)BF2] are described. The usefulness of polyfluoroorganodifluoroboranes for introducing polyfluoroorgano groups into hypervalent FE-F bonds is demonstrated by the synthesis of [C6F5(4-C5F4N)I][BF4] and [p-FC6H4(trans-CF3CF=CF)I][BF4]. (C) 2004 Elsevier B.V. All rights reserved.
Synthesis of Fluorine-Containing Aryl(halo)boranes from Potassium Aryl(fluoro)borates
作者:V. V. Bardin、S. A. Prikhod’ko、M. M. Shmakov、A. Yu. Shabalin、N. Yu. Adonin
DOI:10.1134/s1070363220010089
日期:2020.1
Fluorine-containing aryldihalogenoboranes have been obtained by the reaction of boron and aluminum chlorides and bromides with potassium aryltrifluoroborates K[ArBF3] under mild conditions. In a similar way, bis(pentafluorophenyl)halogenoboranes have been synthesized by the reaction with K[(C6F5)2BF2]. The reaction of K[C6F5BF3] with AlBr3 affords a mixture of C6F5BF2 and C6F5BCl2 due to fast conversion
通过在温和的条件下使硼和氯化铝与溴化物与芳基三氟硼酸钾K [ArBF 3 ]反应,可获得含氟的芳基二卤化硼烷。以类似的方式,通过与K [(C 6 F 5)2 BF 2 ]的反应合成了双(五氟苯基)卤代硼烷。K [C 6 F 5 BF 3 ]与AlBr 3的反应产生C 6 F 5 BF 2和C 6 F 5 BCl 2的混合物,这是由于AlBr 3快速转化为AlBrCl2。计算了BCl 2和BBr 2组的感应和共振参数。