Zi-Long An, Ao-Xiang Yu, Dun-Xu Cao and Bin Xiao*,
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Readily Accessible β-Ge-Substituted Amine-Boranes with Enhanced Fluorescence Efficiency
The hydroboration of 2-pyridyl-substituted alkynylgermanes with 9-borabicyclo[3.3.1]nonane (9-BBN) produces a series of vinylboranes containing N–B coordination. In contrast to their alkynylsilane counterparts, this reaction involves migration of the germyl group. These intramolecular amine-boranes with substitution exclusively at the β-position exhibit significantly strong blue fluorescence and show enhanced fluorescence efficiency compared to previously reported analogues with α-substitution.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.