37828-64-1Relevant academic research and scientific papers
cis-Semihydrogenation of alkynes with amine borane complexes catalyzed by gold nanoparticles under mild conditions
Vasilikogiannaki, Eleni,Titilas, Ioannis,Vassilikogiannakis, Georgios,Stratakis, Manolis
supporting information, p. 2384 - 2387 (2015/02/05)
Supported gold nanoparticles catalyze the semihydrogenation of alkynes to alkenes with ammonia borane or amine borane complexes in excellent yields and under mild conditions. Internal alkynes provide cis-alkenes, making this protocol an attractive alternative of the classical Lindlar's hydrogenation.
Efficient routes to cyclic 2,3-epoxyalcohols from cycloalkenyl ketones, via cycloalkenyl alcohols
Marson,Walker,Pickering,Harper,Wrigglesworth,Edge
, p. 10317 - 10338 (2007/10/02)
The minimising of torsional strain and non-bonding interactions is proposed as the explanation of high diastereoselectivity observed in the epoxidation of cycloalkenyl alcohols, reported for twenty three examples. The resulting 2,3-epoxyalcohols are key i
Chain-extension Reactions of Acetylenes. Part 4. Reaction of 1,3-Dilithioacetylides with Carbonyl Electrophiles, Hexamethylphosphoric Triamide, and Benzylideneaniline
Pover, Keith A.,Scheinmann, Feodor
, p. 2338 - 2345 (2007/10/02)
The regioselectivity of the reactions of 1,3-dilithioalk-1-ynes with various electrophiles has been examined.With formaldehyde and cyclic ketones, reaction occur at C-1 and C-3 to give alk-2-yne-1,5-diols.In contrast reactions with carbon dioxide give allene-1,3-dicarboxylic acids. 1,3-Dilithioalk-1-ynes decompose hexamethylphosphoric triamide and the resulting N-methylmethyleneamine undergoes addition only at the propargylic site.Further reaction with either 1-bromobutane or water gives alkynylamines.Benzylideneaniline also reacts with 1,3-dilithiohex- and hept-1-ynes only at the propargylic site to give N-phenylbut-3-ynylamines.
