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Synthesis of diastereoisomeric BODIPY: An attempt on the resolution of axially chiral BODIPYs

Authors: Reinner I. Lerrick;

Synthesis of diastereoisomeric BODIPY: An attempt on the resolution of axially chiral BODIPYs

Abstract

This article provides efforts on a resolution of axially chiral BODIPYs (Ax*-BODIPY) towards Boron’s chiral utilization. Simply by generating the second chiral center on the dipyrromethene ring over the B-F substitution reaction, the Ax*-BODIPY will then turn to plausibly separable diastereoisomers, a column chromatographically separable molecule. By taking meso substituted p-bromophenyl-2,6-diethyl-1,3,5,7-tetramethylBODIPY as a successful model of conducting fluorine substitution reaction with methanol and ethanol, submission of racemic axially chiral meso substituted o-methoxyphenyl-2-bromo-6-ethyl-1,3,5,7-tetramethylBODPY to (S)-BINOL under the same conditions was unfortunately not succeded. The alternative route which is over B-Cl BODIPYs has successfully been synthesised from 2,4-dimethylpyrrole and 2-methoxybenzoylchloride followed by bromination, Vilsmeir-Haack condensation with 3-ethyl-2,4-dimethylpyrrole, and BCl3 chelation. However, the substitution of S-BINOL to the meso substituted o-methoxy-2-bromo-6-ethyl BCl2 BODYPY (11) was remaining unsuccessful.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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