Addition of o-iodobenzoyl chlorides to imines affords N-acyliminium ions, perhaps in equilibrium with α-chlorobenzamides, as adducts. Reaction of the adducts with 1.1 equivalents of phenyllithium at -78 °C followed by warming to ambient temperature induces an intramolecular Wurtz-Fittig coupling to afford 2,3-dihydroisoindolones in excellent yields.
The first practical niobium(III) reagent in organic synthesis. A convenient route to 2-amino alcohols via the coupling of imines with aldehydes or ketones promoted by NbCl3(DME)
作者:Eric J. Roskamp、Steven F. Pedersen
DOI:10.1021/ja00255a073
日期:1987.10
The Direct Synthesis of Unsymmetrical Vicinal Diamines from Terminal Alkynes: A Tandem Sequential Approach for the Synthesis of Imidazolidinones
作者:Laurel Schafer、Alison Lee、Melanie Sajitz
DOI:10.1055/s-0028-1083279
日期:2009.1
reaction is used in the synthesis of unsymmetrical vicinal diamines via the one-pot synthesis of α-cyanoamines. This methodology is further applied to the efficient synthesis of imidazolidinones. An easy-to-use bis(amidate)titanium precatalyst permits efficient approaches to heterocyclic chemistry from terminal alkynes. hydroamination - titanium - amines - heterocycles - tandem reactions
Highly enantioselective and diastereoselective synthesis of β-amino acid esters and β-lactams from achiral esters and imines
作者:E.J. Corey、Carl P. Decicco、Ronald C. Newbold
DOI:10.1016/s0040-4039(00)92366-9
日期:1991.9
The reaction of S-tert-butyl thiopropionate with a number of N-benzyl or N-allyl aldimines (4) as promoted by the chiral diazaborolidine 1 and triethylamine afforded the β-amino acidesters 5 with high diastereoselectivity and enantioselectivity, providing a simple route to chiral β-lactams 6.