Synthesis and structure of benzoboroxoles: novel organoboron heterocycles
摘要:
Benzoboroxoles (5) can be prepared from the readily available o-bromobenzyl alcohols via dilithiation followed by reaction with triisopropylborate. X-Ray structural analysis of 1-hydroxy-3(1H)-1,2-benzoboroxole (5a) as well as the results of ab initio molecular orbital calculations indicate a planar structure of the boron center with a relatively short C-B bond. Preliminary results regarding the chemistry of benzoboroxoles are also reported. (C) 1999 Elsevier Science Ltd. All rights reserved.
Directed dilithiation of hexafluorocumyl alcohol - formation of a reagent for the facile introduction of a stabilizing bidentate ligand in compounds of hypervalent sulfur (10-S-4), phosphorus (10-P-5), silicon (10-Si-5), and iodine (10-I-3)
In sharp contrast to hypervalent iodine(III) compounds, the isoelectronic bromine(III) counterparts have been little studied to date. This knowledge gap is mainly attributed to the difficult-to-control reactivity of λ3-bromanes as well as to their challenging preparation from the highly toxic and corrosive BrF3 precursor. In this context, we present a straightforward and scalable approach to chelation-stabilized
PEROZZI E. F.; MICHALAK R. S.; FIGULY G. D.; STEVENSON III W. H.; DESS D.+, J. ORG. CHEM., 1981, 46, NO 6, 1049-1053
作者:PEROZZI E. F.、 MICHALAK R. S.、 FIGULY G. D.、 STEVENSON III W. H.、 DESS D.+
DOI:——
日期:——
Directed dilithiation of hexafluorocumyl alcohol - formation of a reagent for the facile introduction of a stabilizing bidentate ligand in compounds of hypervalent sulfur (10-S-4), phosphorus (10-P-5), silicon (10-Si-5), and iodine (10-I-3)
作者:Edmund F. Perozzi、Ronald S. Michalak、Garret D. Figuly、William H. Stevenson、Daniel Dess、Michael R. Ross、J. C. Martin
DOI:10.1021/jo00319a001
日期:1981.3
Synthesis and structure of benzoboroxoles: novel organoboron heterocycles
作者:Viktor V. Zhdankin、P.J. Persichini、Lu Zhang、Shannon Fix、Paul Kiprof
DOI:10.1016/s0040-4039(99)01303-9
日期:1999.9
Benzoboroxoles (5) can be prepared from the readily available o-bromobenzyl alcohols via dilithiation followed by reaction with triisopropylborate. X-Ray structural analysis of 1-hydroxy-3(1H)-1,2-benzoboroxole (5a) as well as the results of ab initio molecular orbital calculations indicate a planar structure of the boron center with a relatively short C-B bond. Preliminary results regarding the chemistry of benzoboroxoles are also reported. (C) 1999 Elsevier Science Ltd. All rights reserved.