Synthesis of rare-earth metal bisalkyl complexes supported by [1-(2-N-morpholinoethylene)-3-(4,4-dimethyl-2-oxazolinyl)] indolyl ligand and their application in the intermolecular hydrophosphination of aryl alkenes

Synthesis of rare-earth metal bisalkyl complexes supported by [1-(2-N-morpholinoethylene)-3-(4,4-dimethyl-2-oxazolinyl)] indolyl ligand and their application in the intermolecular hydrophosphination of aryl alkenes
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[1-(2-N-吗啉代乙烯)-3-(4,4-二甲基-2-恶唑啉基)]吲哚基配体负载稀土金属双烷基配合物的合成及其在芳基烯烃分子间氢膦化中的应用

DOI:
10.1016/j.ica.2022.121096
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发表时间:
2022-07
影响因子:
2.8
通讯作者:
Shaowu Wang
Shaowu Wang
中科院分区:
化学3区
文献类型:
--
作者:
Xiangrui Wang;Xu Zhao;Zeming Huang;Fenhua Wang;Bohan Yan;Xian Ji;Chenghao Chu;Huanhuan Liu;Xinlei Yi;Zhiwei Zhao;Shaowu Wang

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合成并表征了具有N-保护基的3-恶唑啉基功能化吲哚基稀土金属双烷基配合物LRE(CH_2SiMe_3)_2(DME),(L= 1-(2-N-吗啉代乙烯)-3-(4,4-二甲基-2-恶唑啉基)吲哚基,RE = Y(1a),Yb(1b),Er(1c),Dy(1d),Gd(1 e),DME = 1,2-二甲氧基乙烷).配合物由2-吲哚sp2碳负离子、恶唑啉基的N原子、DME的两个烷基和两个氧原子配位。它们在苯乙烯衍生物的分子间氢膦化反应中表现出很高的催化活性,并表现出独特的区域特异性,提供了反马氏加成产物。该催化剂可在较温和的条件下促进萘乙烯等大体积烯烃的氢膦化反应。
Well-definedN-protected 3‑oxazolinyl functionalized indolyl rare-earth metal bisalkyl complexesLRE(CH2SiMe3)2(DME), (L= 1-(2-N-morpholinoethylene)-3-(4,4-dimethyl-2-oxazolinyl) indolyl, RE = Y (1a), Yb (1b), Er (1c), Dy (1d), Gd (1e), DME = 1,2-dimethoxyethane) have been synthesized and characterized. The complexes were coordinated by the 2‑indolyl sp2carbanion, N atom of oxazolinyl, two alkyl groups and two oxygen atoms of DME. They performed high catalytic activities in the intermolecular hydrophosphination of various styrene derivatives and demonstrated exclusive regiospecificity affording theanti-Markovnikov addition products. The catalysts could promote hydrophosphination of bulky alkenes such as naphthalene ethylene under relatively mild conditions.
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