Golden Age of Fluorenylidene Phosphaalkenes-Synthesis, Structures, and Optical Properties of Heteroaromatic Derivatives and Their Gold Complexes.
J Org Chem
; 85(22): 14619-14626, 2020 Nov 20.
Article
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| MEDLINE
| ID: mdl-32830965
ABSTRACT
The substitution of 2,7-dibromo-9-fluorenyl phosphaalkenes with heteroaromatic substituents (bithiophene, benzothiophene, pyridine) offers access to interesting push-pull dye molecules. Steric shielding due to the bulky P-substituent gives marked different reactivities at the 2- and 7-positions, allowing the synthesis of mixed/asymmetric derivatives. Further functionalization via gold(I) coordination was demonstrated and increased the acceptor character, concomitant with a red-shifted absorption.
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01-internacional
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MEDLINE
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En
Revista:
J Org Chem
Año:
2020
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Article
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Suecia