Borabenzene derivatives. 22. Synthesis of boratabenzene salts from 2, 4-pentadienylboranes. Structure of [NMe3Ph][C5H5BMe]
GE Herberich, B Schmidt, U Englert
Index: Herberich, Gerhard E.; Schmidt, Bernd; Englert, Ulli Organometallics, 1995 , vol. 14, p. 471 - 480
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Citation Number: 69
Abstract
Borylation of potassium pentadienide with BCl (NR2) z and subsequent alcoholysis produce 2, 4-pentadienylboranes CsH7B (NR2) 2 (4a-c: R= Me, Et, Pri), CsH7B (OR) z (4e, f: R= Et, But), and CsH7B (OCR2) 2 with 1, 3, 2-dioxaborolane rings (4g, h: R= H, Me) as mixtures of E and 2 isomers. Metahtion of 4a, b in THF by lithium dialkylamides LiNR2 (R= Me, Et, Pi) in the presence of TMEDA results (i) in a nonproductive deborylation via primary attack at the ...
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