The Chemistry of Acylals. 3. Cyanohydrin Esters from Acylals with Cyanide Reagents
作者:Marcel Sandberg、Leiv K. Sydnes
DOI:10.1021/ol005535b
日期:2000.3.1
[reaction: see text] When treated with KCN in DMSO at room temperature, acylals from aliphatic aldehydes gave the corresponding cyanohydrin esters in good to excellent yields. Acylals from aromatic aldehydes were less reactive and gave several byproducts in addition to fair yields of cyanohydrin under the same conditions. Trimethylsilyl cyanide mixed with titanium(IV) chloride afforded cyanohydrin
α-Chloronitriles are prepared by the reaction of arylcarbonyl compounds and trimethylsilyl cyanide with a stoichiometric amount of titanium tetrachloride in good yields.
A Modular Synthesis of Polysubstituted Indolizines
作者:Murat Kucukdisli、Till Opatz
DOI:10.1002/ejoc.201200424
日期:2012.8
furnish polysubstituted indolizines. Overall, the indolizine core can be constructed from a pyridine, two aldehydes, and a nitroalkane, and no undesired functional groups remain in the products. When bromoacetonitrile was used for the N-alkylation, indolizine-3-carbonitriles were obtained instead. The pyridine component may be replaced by other azines, giving rise to relatedheterocyclic systems.