期刊
CANADIAN JOURNAL OF CHEMISTRY
卷 88, 期 5, 页码 426-433出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/V10-009
关键词
polycyclic aromatic hydrocarbons; boron heterocycles; nitrogen heterocycles; X-ray structure
资金
- Xerox Foundation
- Natural Sciences and Engineering Research Council of Canada (NSERC) of Canada
- Alberta Ingenuity Fund
Treatment of a precursor to the chelating Lewis acid 2,2'-diborabiphenyl with 2,6-bisalkynyl-substituted pyridazines, leads to elimination of 2 equiv. of ClSiMe3; subsequent treatment of the mixture with PtCl2 catalyzes the cyclization of observable intermediates to the title 5b,7b-diaza-3b,9b-diborabenzo[ghi]perylene compounds in low isolated yields. The compounds were characterized by NMR and UV-vis spectroscopies, and in one case, by X-ray crystallography. NICS(1) computations indicate that the inner ring is less aromatic than the outer rings.
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