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New access to 4-aryl[2,2]paracyclophanes by high-pressure Diels-Alder reaction
被引:4
|作者:
Minuti, Lucio
[1
]
Barattucci, Anna
[2
]
Bonaccorsi, Paola Maria
[2
]
Siciliano, Carlo
[3
]
Temperini, Andrea
[4
]
机构:
[1] Univ Perugia, Dipartimento Chim Biol & Biotecnol, Via Elce Sotto 8, I-06123 Perugia, Italy
[2] Univ Messina, Dipartimento Sci Chim, Viale F Alcontres 31, I-98166 Messina, Italy
[3] Univ Calabria, Dipartimento Farm & Sci Salute & Nutr, Edificio Polifunz, I-87030 Arcavacata Di Rende, Italy
[4] Univ Perugia, Dipartimento Sci Farmaceut, Via Liceo 1, I-06123 Perugia, Italy
关键词:
Paracyclophanes;
High pressure;
Diels-Alder cycloaddition;
Biaryls;
Catalysis;
ASYMMETRIC CONJUGATE ADDITION;
LIGANDS;
PLANAR;
D O I:
10.1016/j.tetlet.2016.01.053
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The first synthesis of novel 4-aryl[2,2]paracyclophanes based on the Diels-Alder reaction of 4-carbomethoxyethynyl[2,2]paracyclophane as the dienophile with methyl-1,3-butadienes is described. Activation of the Diels-Alder reactions by high-pressure (8 kbar) in combination with the Lewis acid EtAICl(2) allows to obtain in good yield and total regioselectivity the cyclohexadienyl-paracyclophane cycloadducts that are converted to the corresponding aryl-paracyclophanes by DDQ oxidation. (C) 2016 Elsevier Ltd. All rights reserved.
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页码:917 / 919
页数:3
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