The Smallest and One of the Brightest. Efficient Preparation and Optical Description of the Parent Borondipyrromethene System
The Journal of Organic Chemistry2009Vol. 74(15), pp. 5719–5722
Citations Over TimeTop 10% of 2009 papers
Abstract
Fully unsubstituted 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) 1 was prepared. Reaction of 8-thiomethylbodipy 2 with triethylsilane in the presence of a catalytic amount of Pd and a stoichiometric amount of copper(I) thienyl-2-carboxylate (CuTC) in THF at 55 degrees C gave compound 1 in nearly quantitative yield. This compound displays high quantum yields (up to 93%) in polar solvents including water. Its optical properties and crystal structure are discussed.
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