New Strategies for N-Heterocyclic Carbenes Catalyzed Annulations: Springer Theses
Autor Xiangyu Chenen Limba Engleză Paperback – 7 iul 2018
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Specificații
ISBN-13: 9789811097348
ISBN-10: 9811097348
Ilustrații: XIV, 123 p. 66 illus., 13 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.2 kg
Ediția:Softcover reprint of the original 1st ed. 2017
Editura: Springer Nature Singapore
Colecția Springer
Seria Springer Theses
Locul publicării:Singapore, Singapore
ISBN-10: 9811097348
Ilustrații: XIV, 123 p. 66 illus., 13 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.2 kg
Ediția:Softcover reprint of the original 1st ed. 2017
Editura: Springer Nature Singapore
Colecția Springer
Seria Springer Theses
Locul publicării:Singapore, Singapore
Cuprins
Introduction.- NHC-catalyzed Annulations of Nitroalkenes.- NHC-catalyzed Enantioselective Annulations of Enals.- NHC-catalyzed Enantioselective Annulations of α,β-unsaturated Carboxylic Acids.- Experimental Part.- Research Summary.
Textul de pe ultima copertă
This thesis focuses on NHC-catalyzed annulation of nitroalkenes, enals and α,β-unsaturated carboxylic acids. (1) NHCs were found to be efficient catalysts for the [4+2] annulation of β-substituted nitroalkenes. The scope of Rauhut–Currier reaction was successfully extended to the most challenging β-substituted alkenes by this method; (2) Enals were successfully used for [4+2] annulations with azodicarboxylates catalyzed by NHC via γ-addition. Highly enantiopure tetrahydropyridazinones and γ-amino acid derivatives could be easily prepared by subsequent transformations of the resulting dihydropyridazinones. (4) The readily available α,β-unsaturated carboxylic acids were first successfully employed to generate the α,β-unsaturated acyl azolium intermediates by using NHC for the enantioselective [3+2] and [3+3] annulations.
Caracteristici
Nominated by Chinese Academy of Sciences as an outstanding PhD thesis Provides new methodologies of N-heterocyclic carbene catalysis Describes in detail the annulation reactions of nitroalkenes, enals and a,ß-unsaturated carboxylic acids Includes supplementary material: sn.pub/extras