Michael Additions in Aqueous Media: “On-Water” and “In-Water” Processes from α-Nitro Ketones and Their Anions
作者:Giorgio Giorgi、Pilar López-Alvarado、Sonia Miranda、Jean Rodriguez、J. Carlos Menéndez
DOI:10.1002/ejoc.201201431
日期:2013.3
A variety of α,β-unsaturatedaldehydes and ketones gave very high-yielding Michael addition reactions with α-nitrocycloalkanones in water, at room temperature without added catalyst. These can be considered as one of the very few “on-water” Michael reactions known in the literature, because they took place in suspension or emulsion and at increased speed relative to the same transformations performed
作者:Bassetti, Mauro、Cerichelli, Giorgio、Floris, Barbara
DOI:——
日期:——
Alder; Offermanns; Rueden, Chemische Berichte, 1941, vol. 74, p. 907
作者:Alder、Offermanns、Rueden
DOI:——
日期:——
An example of kinetic resolution by bakers' yeast: synthesis of enantiomers of endo-brevicomin from the same precursor
作者:Sowmianarayanan Ramaswamy、Allan C. Oehlschlager
DOI:10.1021/jo00262a056
日期:1989.1
Et2MeN×HI-Catalyzed Reaction of Arylboronic Acids with 2-Acyl-2,3-dihydro-4H-pyrans Leading to 2-Aryltetrahydrocyclopenta[1,3,2]dioxaboroles
作者:Takahide Fukuyama、Takahiro Okamura、Ilhyong Ryu
DOI:10.1055/s-0030-1260007
日期:2011.5
The reaction of arylboronic acids with 2-acyl-2,3-dihydro-4H-pyrans proceeded smoothly in the presence of a catalytic amount of Et2MeNËHI to give acyl-substituted 2-aryltetrahydrocyclopenta[1,3,2]dioxaboroles in good yields. The reaction is likely to involve the acid-catalyzed ring-opening reaction of pyrans, an intramolecular aldol reaction, and condensation with boronic acids.