Thiele, Bjoern; Schreyer, Peter; Englert, Ulli; Paetzold, Peter; Boese, Roland; Wrackmeyer, Bernd:
Eight-membered boron-nitrogen rings (RBNR')4 from four-membered boron-nitrogen rings (RBNBu-tert)2 by an NBu-tert/NR' exchange.
1991
In: Chemische Berichte (Chem.Ber.), Jg. 124 (1991), Heft 10, S. 2209 - 2216
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Eight-membered boron-nitrogen rings (RBNR')4 from four-membered boron-nitrogen rings (RBNBu-tert)2 by an NBu-tert/NR' exchange.
Autor(in):
Thiele, Bjoern; Schreyer, Peter; Englert, Ulli; Paetzold, Peter; Boese, Roland im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen; Wrackmeyer, Bernd
Erscheinungsjahr:
1991
Erschienen in:
Chemische Berichte (Chem.Ber.), Jg. 124 (1991), Heft 10, S. 2209 - 2216
ISSN:

Abstract:

Reactions of diazadiboretidines I (R = Me, Et, Me2CH, Me2CHCH2, Pr) with azides and a nitrone are reported. Treating I (R = Me) with 2 equiv. PhCH2N3 in hexane gave 38% tetraazaborole II. Treating I (R = Et, Me2CH, Me2CH, Me2CHCH2) with R1N3 (R1 = PhCH2, Pr, Me2CHCH2, Ph) in hexane gave 43% III in one case; the rest of the time, eight-membered ring products IV (same R, R1) were formed. NMR spectral data indicate a tub-like structure for IV. Treating I (R = Me2CH, Me2CHCH2, Pr) with nitrone PhCH:N(Me)(O) gave 16-41% oxadiazadiborolidines V. The structure of III and IV (R = Me2CH, R1 = PhCH2) were detd. by x-ray crystallog.