In:
Catalysts, MDPI AG, Vol. 9, No. 11 ( 2019-11-09), p. 942-
Kurzfassung:
A method for regioselective synthesis of 2,4-disubstituted and more highly substituted fluorenols using catalytic [2+2+2]cyclotrimerization of mono- and disubstituted diynes with terminal alkynes was explored. In the former case, the preferential formation of the 2,4-regioisomers was achieved in the presence of Cp*Ru(cod)Cl, whereas Rh-based catalysts tended to provide 3,4-regioisomers as the major products. The 2,4-disubstituted fluorenols were converted into the corresponding 9,9′-spirobifluorene derivatives and their structural and photophysical properties were evaluated.
Materialart:
Online-Ressource
ISSN:
2073-4344
DOI:
10.3390/catal9110942
Sprache:
Englisch
Verlag:
MDPI AG
Publikationsdatum:
2019
ZDB Id:
2662126-5