pd催化铃木反应中葡萄糖吡喃苷苯并咪唑基离子液体的合成

IF 1.2 4区化学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Journal of Carbohydrate Chemistry Pub Date : 2022-01-01 DOI:10.1080/07328303.2022.2141770

Xiaoming Wen , Jian Wang , Luan He , Bisheng Wei , Ying Xie

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引用次数: 0

摘要

合成了几种具有游离和乙酰基保护的苯并咪唑基离子液体(BzIm il)，并将其作为配体用于pd催化的环境友好型铃木反应。具有乙酰基保护的BzIm il表现出最高的活性，这可能是因为糖具有较大的空间位阻，并且乙酰基可以与Pd配合。Pd(OAc)2/Glc-BzIm il游离葡萄糖吡喃苷的核磁共振谱表明Pd- c形成。被il保护的Pd纳米粒子尺寸为5.3 (0.6)nm，被认为是真正的活性物质。制备了一系列芴核心芳基芴衍生物，分离收率在90%以上。

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Synthesis of glucopyranoside benzimidazolium-based ionic liquids for Pd-catalyzed aqueous Suzuki reaction

Several novel benzimidazolium-based ionic liquids (BzIm ILs) with free and acetyl protected glucopyranoside unit were synthesized and used as ligand for Pd-catalyzed environment-friendly Suzuki reaction. The BzIm ILs with the acetyl protection shows the highest activity, probably because the sugar has a large steric hindrance and acetyl groups can coordinate with Pd. The nuclear magnetic resonance spectra of Pd(OAc)₂/Glc-BzIm ILs free glucopyranoside indicate that Pd-C is formed. The Pd nanoparticles protected by ILs with a size of 5.3 (0.6) nm are considered to be real active species. A series of fluorene core arylfluorene derivatives were prepared with isolated yields above 90%.

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来源期刊

Journal of Carbohydrate Chemistry 化学-生化与分子生物学

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

1 months

期刊介绍： The Journal of Carbohydrate Chemistry serves as an international forum for research advances involving the chemistry and biology of carbohydrates. The following aspects are considered to fall within the scope of this journal: -novel synthetic methods involving carbohydrates, oligosaccharides, and glycoconjugates- the use of chemical methods to address aspects of glycobiology- spectroscopic and crystallographic structure studies of carbohydrates- computational and molecular modeling studies- physicochemical studies involving carbohydrates and the chemistry and biochemistry of carbohydrate polymers.