The combination of cerium(III) chloride heptahydrate and sodium iodide supported on silica gel is known to promote Michael-type additions. Continuing our work on solvent-free conditions, the CeCl3â7H2O-NaI-SiO2 system catalyzes the addition of a variety of indoles and nitroalkenes, giving 2-indolyl-1-nitroalkane derivatives in good yields. Develop-ment of this method has resulted in a new protocol for the synthesis of 4-substituted â-carbolines.
Titolo: | Efficient Preparation of 2-Indolyl-1-nitroalkane Derivatives Employing Nitroalkenes as Versatile Michael Acceptors: New Practical Linear Approach to Alkyl 9H-b-Carboline-4-carboxylate |
Autore/i: | BARTOLI, GIUSEPPE; BOSCO, MARCELLA; S. Giuli; A. Giuliani; L. Lucarelli; E. Marcantoni; SAMBRI, LETIZIA; E. Torregiani |
Autore/i Unibo: | |
Anno: | 2005 |
Rivista: | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/jo048776w |
Abstract: | The combination of cerium(III) chloride heptahydrate and sodium iodide supported on silica gel is known to promote Michael-type additions. Continuing our work on solvent-free conditions, the CeCl3â7H2O-NaI-SiO2 system catalyzes the addition of a variety of indoles and nitroalkenes, giving 2-indolyl-1-nitroalkane derivatives in good yields. Develop-ment of this method has resulted in a new protocol for the synthesis of 4-substituted â-carbolines. |
Data prodotto definitivo in UGOV: | 2005-10-07 17:36:49 |
Appare nelle tipologie: | 1.01 Articolo in rivista |
File in questo prodotto:
Eventuali allegati, non sono esposti
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.