Application of 14187-32-7, An article , which mentions 14187-32-7, molecular formula is C20H24O6. The compound – Dibenzo-18-crown-6 played an important role in people’s production and life.
Bis(allyl)gallium Cation, tris(allyl)gallium, and tetrakis(allyl)gallate: Synthesis, characterization, and reactivity
A series of cationic, neutral, and anionic allylgallium complexes has been isolated and fully characterized. It includes neutral [Ga(nu1- C3H5)3(L)] (1, L = THF; 2, L = OPPh 3), cationic [Ga(nu1-C3H5) 2(THF)2]+[A]-(3, [A]-= [B(C6F5)4]-; 4, [A]-= [B(C6H3Cl2)4]-), as well as anionic [Cat]+[Ga(nu1-C3H 5)4]-(5, [Cat]+= K+; 6, [Cat]+= [K(dibenzo-18-c-6]+; 7, [Cat]+= [PPh4]+). Binding modes of the allyl ligand in solution and in the solid state have been studied comparatively. Single crystal X-ray analyses revealed a fourcoordinate neutral gallium center in 2, a five-coordinate cationic gallium center in 4 and [4¡¤THF], and a four-coordinate anionic gallium center with a bridging mu2- nu1:nu2coordination mode of the allyl ligand in 6. The reactivity of this series of allylgallium complexes toward benzophenone and N-heteroaromatics has been investigated. Counterion effects have also been studied. Reactions of 1 and 5 with isoquinoline revealed the first examples of organogallium complexes reacting under 1,2-insertion with pyridine derivatives.
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Chiral Catalysts,
Chiral catalysts – SlideShare