Divalent lanthanide derivatives in organic synthesis. 1. Mild preparation of samarium iodide and ytterbium iodide and their use as reducing or coupling agents
作者:P. Girard、J. L. Namy、H. B. Kagan
DOI:10.1021/ja00528a029
日期:1980.4
Mild Method for the Selective Esterification of Carboxylic Acids Based on the Garegg−Samuelsson Reaction
作者:Sara P. Morcillo、Luis Álvarez de Cienfuegos、Antonio J. Mota、José Justicia、Rafael Robles
DOI:10.1021/jo102395c
日期:2011.4.1
A mild method for the selective esterification of primary alcohols is described. The use of different phosphines, I-2, and imidazole allows the selective esterification: of a wide variety of acids with excellent results. The generation of a bulky phosphonitun-carboxylate salt as intermediate could justify the selectivity observed in this process. Additionally, amides also can be synthesized with use of this method.
Suzuki Cross-Couplings of Alkyl Tosylates that Possess β Hydrogen Atoms: Synthetic and Mechanistic Studies