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Alkenyl-Assisted C3–C Bond Activation of Acetylacetonate Coordinated to Iridium
Organometallics ( IF 2.5 ) Pub Date : 2017-09-07 00:00:00 , DOI: 10.1021/acs.organomet.7b00523
Miguel A. Esteruelas 1 , Enrique Oñate 1 , Adrián U. Palacios 1
Affiliation  

The cleavage of a C3–C bond of the acetylacetonate (acac) ligand of the complexes Ir{(E)-CH═CHR}{κ2-N,C-(quin-C6H4)}(acac)(PiPr3) (R = H (1), Ph (2)) has been achieved by reaction with an acid and subsequently with a base. The rupture is assisted by the alkenyl coligand. The latter reacts with the acid to be coupled with the acac group, in order to weaken the C3–C bonds. Then, the base removes an acylium group from the resulting intermediates [Ir{κ2-N,C-(quin-C6H4)}{κ3-O,O,C-(acac-C2H2R)}(PiPr3)]+ (R = H (3), Ph (4)) to afford Ir{κ2-N,C-(quin-C6H4)}{η4-CH(R)CHC(Me)O}(PiPr3) (R = H (5), Ph (6)).

中文翻译:

烯基助催化乙酰丙酮配合丙酮的C 3 -C键活化

一个C的裂解3的乙酰丙酮化物(ACAC)的-C键配位体配合物的铱{(ë) - CH =} {κ 2 -N,C-(五重峰-C 6 H ^ 4)} ...(ACAC)(通过与酸反应,然后与碱反应,已获得P i Pr 3)(R = H(1),Ph(2))。断裂是由链烯基大分子胶体协助的。后者与酸反应与acac基团偶联,以削弱C 3 -C键。然后,基站将删除所得到的中间体的[Ir的acylium组{κ 2 -N,C-(五重峰-C 6 H ^ 4)} {κ3 -O,O,C-(ACAC-C 2 H ^ 2 R)}(P3)] +(R = H(3)中,Ph(4)),得到的Ir {κ 2 -N,C-(五重峰-C 6 H ^ 4)} {η 4 -CH(R)CHC(ME)O}(P3)(R = H(5)中,Ph(6))。
更新日期:2017-09-07
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