817195-71-4Relevant articles and documents
Water-Soluble Maleimide-Modified Gold Nanoparticles (AuNPs) as a Platform for Cycloaddition Reactions
Ghiassian, Sara,Gobbo, Pierangelo,Workentin, Mark S.
, p. 5438 - 5447 (2015/08/24)
Maleimide-terminated triethylene glycol thiolate monolayer-protected gold nanoparticles (Mal-EG4-AuNPs) with a core size of 2.5±0.7 nm were prepared. Mal-EG4-AuNPs were modified in high yields via interfacial 1,3-dipolar cycloadditio
Magnesium iodide promoted reactions of nitrones with cyclopropanes: A synthesis of tetrahydro-1,2-oxazines
Ganton, Michael D.,Kerr, Michael A.
, p. 8554 - 8557 (2007/10/03)
Anhydrous magnesium iodide (MgI2) is shown to be an effective promoter of the "homo 3+2" dipolar cycloaddition of nitrones with 1,1-cyclopropane diesters. In almost all cases the products tetrahydro-1,2-oxazines are formed in excellent yields. The reactions are highly diastereoselective for a cis relationship between the substitutents at the 3- and 6-positions on the tetrahydrooxazine ring. As an alternative to using a preformed nitrone, the reaction may be performed in a 3-component sense by combining an aldehyde, an hydroxylamine, and the cyclopropane in the presence of catalytic MgI2.