Borole derivatives. 15. Borole dianions. Metalation of 1-(dialkylamino)-2,5-dihydro-1H-boroles and the structure of Li2(C4H4BNEt2).TMEDA.
In: Angewandte Chemie, Jg. 102 (1990) ; Nr. 3, S. 330-331
Zeitschriftenaufsatz / Fach: Chemie
Treating 1-(dialkylamino)-2,5-dihydro-1H-boroles (alkyl = Me, Et) with a hindered Li amide in THF gave 70-71% borole dianions (I; R = Me, Et). Treating I (R = Me, Et, CHMe2) with Me2NCH2CH2NMe2 (TMEDA) in THF gave 94-97% cryst. adducts. The structure of one of these (II) was detd. by x-ray crystallog.