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A Meso Butterfly-Like Ce(III)-Containing Antimonotungstate with Catalytic Activity for Synthesizing Isoindolinones
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2024-09-26 , DOI: 10.1021/acs.inorgchem.4c03662
Guo-Ping Yang, Han-Jin Shi, Zhou-Fu Lin, Yu-Feng Liu, Xiao-Ling Lin, Ke Li

A unique meso Ce(III)-containing antimonotungstate, {Na(OAc)(H2O)2[Ce4(tar)(Htar)2(Sb2W21O72)2(H2O)7]}244– (Ce4tar3; H4tar = tartaric acid), consisting of two enantiomeric parts with a butterfly-like configuration, was successfully synthesized by a one-pot in situ method and characterized. The coordination of d- or l-tar ligands induced the formation of Dawson-like {Ce2Sb2W21} with right or left configurations, thereby determining the d/l configurations of {Na(OAc)(H2O)2[Ce4(tar)(Htar)2(Sb2W21O72)2(H2O)7]}22–. Carboxyl groups link these two enantiomeric parts with Ce(III) ions from each other around the symmetric center of the P1̅ space group. The three types of tar ligands exhibit distinct coordination modes, and all coordinate with at least one W(VI) atom using one carboxylate oxygen atom and one α-OH. Ce4tar3 represents the largest case among those meso-dl-tar-functionalized polyoxometalates. Furthermore, Ce4tar3 exhibits excellent catalytic activity for synthesizing isoindolinones via the three-component reaction of 2-acetylbenzoic acids, amines, and phosphine oxides.

中文翻译:


具有催化合成异吲哚啉酮活性的内消旋蝴蝶状Ce(III)锑钨酸盐



一种独特的含内消旋Ce(III)的锑钨酸盐,{Na(OAc)(H 2 O) 2 [Ce 4 (tar)(Htar) 2 (Sb 2 W 21 O 72 ) 2 (H 2 O) 7 ]} 2采用一锅法原位法成功合成了由两个蝴蝶构型对映体组成的44–Ce 4 tar 3 ;H 4 tar =酒石酸)并进行了表征。 d-l-焦油配体的配位诱导形成具有右或左构型的Dawson样{Ce 2 Sb 2 W 21 },从而确定了{Na(OAc)(H 2 O) 2d / l构型[Ce 4 (tar)(Htar) 2 (Sb 2 W 21 O 72 ) 2 (H 2 O) 7 ]} 22– 。羧基将这两个对映体部分与 Ce(III) 离子围绕P 1̅ 空间群的对称中心彼此连接。三种类型的焦油配体表现出不同的配位模式,并且都使用一个羧酸根氧原子和一个α-OH与至少一个W(VI)原子配位。 Ce 4 tar 3代表了那些内消旋-dl-焦油官能化的多金属氧酸盐中最大的情况。 此外, Ce 4 tar 3通过2-乙酰基苯甲酸、胺和氧化膦的三组分反应合成异吲哚啉酮表现出优异的催化活性。
更新日期:2024-09-26
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