名称:
Synthesis and characterization of triarylborthiins, Ar3B3S3 (Ar = 4-MeC6H4, 3-MeC6H4, 2-MeC6H4, 4-EtC6H4 and 3,5-Me2C6H3)
摘要:
The air/moisture-sensitive triarylborthiins, Ar3B3S3 (Ar = 4-MeC6H4, 3-MeC6H4, 2-MeC6H4, 4-EtC6H4, and 3,5-Me2C6H3), have been prepared by the reaction of ArBBr2 with HgS in benzene at reflux and have been characterized by B-11 NMR and IR spectroscopy and mass spectrometry. The substituted aryl derivatives are less air-stable than Ph3B3S3, and in air significantly decompose to boron-oxygen species within minutes; the approximate order of air-stability is (Ar=) Ph > 3,5-Me2C6H3 > 4-EtC6H4 > 4-MeC6H4 > 3-MeC6H4 > 2-MeC6H4. ArBBr2 compounds have been prepared by the reaction of ArHgBr with BBr3; their B-11, C-13, and H-1 NMR data are presented. NMR (C-13, H-1) data are also reported for the ArHgBr species prepared by reaction of ArMgBr with HgBr2.