ISSN:
0009-2940
Keywords:
Phosphine ligands
;
Dibenzofuran
;
Dibenzothiophene
;
Lithium compounds
;
Multiple lithiation
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Twofold lithiation of dibenzofuran (6) and dibenzothiophene (12) with n-butyllithium/N,N,N′,N′-tetramethylethylenediamine (TMEDA) in n-hexane or n-pentane followed by the reaction with chlorodiphenylphosphine yielded the title compounds 4 and 5, respectively, The monophosphines 4-(diphenylphosphino)dibenzofuran (11) and 4-(diphenylphosphino)dibenzothiophene (15) were obtained analogously via the monolithium compounds 9 and 14 of the heteroarenes. In the case of dibenzofuran (6), it was shown that mono- and dilithiation is controlled by temperature.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240806
Permalink