In:
Dalton Transactions, Royal Society of Chemistry (RSC), Vol. 51, No. 3 ( 2022), p. 898-903
Abstract:
We report on the reactivity of magnesium( i ) dimers, [Mg(nacnac)] 2 (nacnac = HC[C(Me)N(2,6- i Pr 2 C 6 H 3 )] 2 ([ Dipp LMg] 2 ) and HC[C(Me)N(2,4,6-Me 3 C 6 H 2 )] 2 ([ Mes LMg] 2 )), towards the phosphaalkyne t BuCP. The steric profile of the magnesium( i ) dimer results in selectivity for different products. The larger diisopropylphenyl derivative yields exclusively the monomeric dimagnesiated phosphaalkene [ Dipp LMg]PC( t Bu)([ Dipp LMg]) (1), while the mesityl derivative facilitates reductive coupling of two phosphaalkyne equivalents to give access to the 1,3-diphosphacyclobutadienediide [ Mes LMg] 2 [( t Bu) 2 C 2 P 2 ](2). The reactivity differs in coordinating solvents such as THF, which allowed for the observation of C–P coupled products. For sake of comparison, reactions of magnesium( i ) compounds with Me 3 SiCN were carried out. In contrast to the reactions involving t BuCP, these afforded 1,3-diazabutadienediyl complexes via reductive coupling and silyl migration processes.
Type of Medium:
Online Resource
ISSN:
1477-9226
,
1477-9234
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472887-4
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