Tetravalent niobium alkyls and enolate stabilized by anionic organic amides
摘要:
The lithium amide [3,5-Me2PhN(Ad)]Li . Et2O reacts with NbCl4(THF)(2) to give [3,5-Me2PhN(Ad)](3)NbCl (1). Reactions of 1 with PhLi and MeLi produced the corresponding alkyl derivatives [3,5-Me2PhN(Ad)](3)NbR (R= Ph (2a), Me (2b)). Attempts to prepare a neophyl niobium derivative led instead to the formation of the corresponding enolate [ 3,5-Me2PhN(Ad)](3)Nb(OCH=CH2) (3), arising from the cleavage of THF. (C) 1998 Elsevier Science S.A. All rights reserved.
Tetravalent niobium alkyls and enolate stabilized by anionic organic amides
摘要:
The lithium amide [3,5-Me2PhN(Ad)]Li . Et2O reacts with NbCl4(THF)(2) to give [3,5-Me2PhN(Ad)](3)NbCl (1). Reactions of 1 with PhLi and MeLi produced the corresponding alkyl derivatives [3,5-Me2PhN(Ad)](3)NbR (R= Ph (2a), Me (2b)). Attempts to prepare a neophyl niobium derivative led instead to the formation of the corresponding enolate [ 3,5-Me2PhN(Ad)](3)Nb(OCH=CH2) (3), arising from the cleavage of THF. (C) 1998 Elsevier Science S.A. All rights reserved.