Selenoesters in organic synthesis. 1. A novel synthesis of ketones.

Synthesis of Substituted Se‐Phenyl Selenocarboxylates from Terminal Alkynes

“…The development of easy and efficient methods for the preparation of selenocarboxylic esters has attracted considerable attention because of their importance as intermediates in organic synthesis 1a−1c. In fact, among other applications, they are employed as precursors of acyl radicals,2a−2c as mild acyl transfer reagents3a−3c and as intermediates in the synthesis of ketones 4a,4b…”

Synthesis of α, β-Unsaturated Selenoesters by the Reaction of Acylzirconene Chlorides with ArSeBr

“…building blocks for heterocyclic compounds (axazer' and precursors of acyl radicals." Recently we have revealed that the selenocarbonylation addition reaction of selenoesters to nonactivated terminal alkynes under the catalysis of CuX produces (2) arylseleno <x, fJ-unsaturated ketones in high selectivity and high yields.! In addition, Byeon" reported that <x, fJ-unsaturated selenoesters served as dienophiles in Diels-Alder reactions with a variety of 1,3dienes with reverse regioselectivity.…”

Rongalite®/PEG-400 as reducing system in the synthesis of new glycerol-derived selenol esters using anhydrides and bis-(2,2-dimethyl-1,3-dioxolanylmethyl)diselenide as substrates

“…They have been used as precursors of acyl radicals and anions, [1][2][3][4] intermediates in the synthesis of ketones, 5,6 as building blocks of heterocyclic compounds, 7 in Diels-Alder, 8,9 cyclocondensation 10 and various cyclization reactions. [11][12][13][14] They were also used as a precursors in the synthesis of vinyl compounds, 15 in the formation of C-peptide bonds, [16][17][18] and the synthesis of some natural occurring compounds, [19][20][21][22][23] besides having proven antioxidant properties.…”