某些2-联萘基硼N,O双齿螯合物的质谱研究

Mass Spectra of 2-Binaphthyl Boroh ChelatesCotaining N, O-Bidentate Ligands

本文报导含有2-联萘基的二芳基硼8-羟基喹啉类螯合物及苯丙氨酸螫合物的质谱研究。结果表明，这类化合物容易通过础上去烃化或经历从B-N键上的消除反应形成含三配位硼的硼杂FDA唑啉环。与2-联萘骨架相关的两类σ-π重排现象，即2-联萘骨架自身的π化重排以及包括硼原子在内的π-芳化也被探讨。后者涉及氢转移的同时逐出中性分子碎片（N，O-双齿配体）。

The mass spectra of 2-Binaphthyl-containing diaryboron chelates of 8-Hgdroxyquinolines and phenylalanine were studied. The formation of 1, 3, 2-oxazahorolidine-ring form the fragmentatidn of chelate-5-ring, via either loss of arylgroup from boron of β-elimination of ArH from B - N bond, are prmary routes. The two σ-πtype rearrangements of 2-Binaphthyl unit, either within the ligand or to the boron,have heen observed also. The latter process involves the expulsion of the neutral species (N, O-bidentate ligands), accompanied by hydrogen migration.