竞争性Diels –涉及丙烯酸乙酯,丙烯酸2-羟乙酯和丙烯酸2-甲氧基乙酯的Alder反应表明,某些路易斯酸(例如EtAlCl 2)选择性地与2-羟乙基酯基团络合。使用2-羟基乙基富马酸乙酯的研究支持了这些发现。13 C NMR光谱学提供了一些有关2-羟乙基酯与EtAlCl 2之间相互作用的性质的证据。描述了EtAlCl 2对(2 R ∗,3 R ∗)-2-(3-羟基)丙烯酸丁酯的Diels-Alder反应中非对映控制水平的影响。
竞争性Diels –涉及丙烯酸乙酯,丙烯酸2-羟乙酯和丙烯酸2-甲氧基乙酯的Alder反应表明,某些路易斯酸(例如EtAlCl 2)选择性地与2-羟乙基酯基团络合。使用2-羟基乙基富马酸乙酯的研究支持了这些发现。13 C NMR光谱学提供了一些有关2-羟乙基酯与EtAlCl 2之间相互作用的性质的证据。描述了EtAlCl 2对(2 R ∗,3 R ∗)-2-(3-羟基)丙烯酸丁酯的Diels-Alder反应中非对映控制水平的影响。
Selective complexation of 2-hydroxyethyl esters using lewis acids
作者:Gary Clapham、Michael Shipman
DOI:10.1016/s0040-4039(99)01051-5
日期:1999.7
Competitive Diels-Alder reactions between ethyl acrylate and 2-hydroxyethyl acrylate (1,3-cyclopentadiene, CH2Cl2, 0 degrees C) in the presence of a variety of Lewis acids indicate that selective complexation of the 2-hydroxyethyl ester can be accomplished, most notably using EtAlCl2. Further Diels-Alder reactions using ethyl 2-hydroxyethyl fumarate support these findings. C-13 NMR studies provide direct evidence for the nature of the interactions between 2-hydroxyethyl esters and EtAlCl2. (C) 1999 Elsevier Science Ltd. All rights reserved.
Selective Lewis Acid Complexation of 2-Hydroxyethyl Esters using Competitive Diels–Alder Reactions as a Mechanistic Probe
作者:Gary Clapham、Michael Shipman
DOI:10.1016/s0040-4020(99)01071-6
日期:2000.2
Competitive Diels–Alder reactions involving ethyl acrylate, 2-hydroxyethyl acrylate and 2-methoxyethyl acrylate indicate that certain Lewis acids (e.g. EtAlCl2) selectively complex to the 2-hydroxyethyl ester group. Studies using ethyl 2-hydroxyethyl fumarate support these findings. 13C NMR spectroscopy provides some evidence regarding the nature of the interactions between 2-hydroxyethyl esters and
竞争性Diels –涉及丙烯酸乙酯,丙烯酸2-羟乙酯和丙烯酸2-甲氧基乙酯的Alder反应表明,某些路易斯酸(例如EtAlCl 2)选择性地与2-羟乙基酯基团络合。使用2-羟基乙基富马酸乙酯的研究支持了这些发现。13 C NMR光谱学提供了一些有关2-羟乙基酯与EtAlCl 2之间相互作用的性质的证据。描述了EtAlCl 2对(2 R ∗,3 R ∗)-2-(3-羟基)丙烯酸丁酯的Diels-Alder反应中非对映控制水平的影响。