BCl<sub>3</sub>-Activated Synthesis of COO-BODIPY Laser Dyes: General Scope and High Yields under Mild Conditions
作者:César Ray、Christopher Schad、Florencio Moreno、Beatriz L. Maroto、Jorge Bañuelos、Teresa Arbeloa、Inmaculada García-Moreno、Cassie Villafuerte、Gilles Muller、Santiago de la Moya
DOI:10.1021/acs.joc.9b03059
日期:2020.4.3
A general and straightforward method for the synthesis of COO-BODIPYs from F-BODIPYs and carboxylic acids is established. The method is based on the use of boron trichloride to activate the involved substitution of fluorine, which leads to highyields through rapid reactions under soft conditions. This mildmethod opens the way to unprecedented laser dyes with outstanding efficiencies and photostabilities
Carboxylates versus Fluorines: Boosting the Emission Properties of Commercial BODIPYs in Liquid and Solid Media
作者:Gonzalo Durán-Sampedro、Antonia R. Agarrabeitia、Luis Cerdán、M. Eugenia Pérez-Ojeda、Angel Costela、Inmaculada García-Moreno、Ixone Esnal、Jorge Bañuelos、Iñigo López Arbeloa、María J. Ortiz
DOI:10.1002/adfm.201300198
日期:2013.9.14
synthesized. Using a simple protocol, fluorine atoms in the commercial (4,4‐difluoro‐4‐bora‐3a,4a‐diaza‐s‐indacene) (F‐BODIPY) by carboxylate groups. The new O‐BODIPYs exhibit enhanced optical properties and laser behavior both in the liquid and solid phases compared to their commercial analogues. Lasing efficiencies up to 2.6 times higher than those recorded for the commercial dyes are registered with high
First Highly Efficient and Photostable<i>E</i>and<i>C</i> Derivatives of 4,4-Difluoro-4-bora-3a,4a-diaza-<i>s</i>-indacene (BODIPY) as Dye Lasers in the Liquid Phase, Thin Films, and Solid-State Rods
作者:Gonzalo Duran-Sampedro、Ixone Esnal、Antonia R. Agarrabeitia、Jorge Bañuelos Prieto、Luis Cerdán、Inmaculada García-Moreno、Angel Costela、Iñigo Lopez-Arbeloa、María J. Ortiz
DOI:10.1002/chem.201303579
日期:2014.2.24
dyes, both in liquid solution and in the solid phase, with lasing efficiencies under transversal pumping up to 73 % in liquid solution and 53 % in a solid matrix. The new dyes also showed enhanced photostability. In a solid matrix, the derivative of commercial dye PM597 that incorporated cyano groups at the boron center exhibited a very high lasing stability, with the laser emission remaining at the
Masking and Demasking Strategies for the BF<sub>2</sub>–BODIPYs as a Tool for BODIPY Fluorophores
作者:Ankush B. More、Soumyaditya Mula、Shrikant Thakare、Nagaiyan Sekar、Alok K. Ray、Subrata Chattopadhyay
DOI:10.1021/jo502028g
日期:2014.11.21
An efficient and chemoselective route for transforming BF(2)BODIPYs to Et2B-BODIPYs (masking) was developed using Et2AlCl. The Et groups can be easily replaced with F atoms using BF3 center dot Et2O in moist CH2Cl2 to regenerate the BF(2)BODIPYs (demasking). The maskingdemasking strategy is very useful for synthesizing functionalized BODIPYs via nucleophilic and reductive reactions. The masking strategy was used to synthesize a BODIPY dimer by McMurry coupling of a formyl Et2BBODIPY, while a new BODIPY with an asymmetrically substituted B-center was synthesized using the demasking strategy.
Steric Strain Release-Directed Regioselective Functionalization of <i>meso</i>-Methyl Bodipy Dyes
作者:Neelam Shivran、Soumyaditya Mula、Tapan K. Ghanty、Subrata Chattopadhyay
DOI:10.1021/ol202490p
日期:2011.11.4
Starting from some meso-methyl Bodipy dyes, the corresponding meso-styryl derivatives were synthesized by regioselective Knoevenagel-type condensation with different aromatic aldehydes. The reactions were driven by the alleviation of the structural strain of the alkyl substituted Bodipys that could override the differential acidities of the methyl protons at the pyrrole ring of the Bodipy moiety.