Synthesis of Vinyl Selenides

NaBH4/[bmim]BF4: a new reducing system to access vinyl selenides and tellurides

“…This regioselectivity is similar to that reported for the methods which use organic solvents. 1,[13][14][15][16][17][18][19][20] When the same protocol was applied to phenyl acetylene 1g, (E)-1,2-bis-phenylseleno styrene 5a was obtained in 85% yield after 3 h at 60 °C (Table 1, entry 7). This result is similar to that obtained under solvent-free conditions.…”

“…[1][2][3][4][5][6][7][8][9][10] Besides, organoselenium and organotellurium compounds have attracted increased interest because of their unique biological and pharmacological properties. 11,12 In this way, various methods are mentioned for the preparation of vinyl chalcogenides and the most common protocols involve the addition of organo chalcogenol, or the respective chalcogenolate anions, to terminal or internal alkynes.…”

“…11,12 In this way, various methods are mentioned for the preparation of vinyl chalcogenides and the most common protocols involve the addition of organo chalcogenol, or the respective chalcogenolate anions, to terminal or internal alkynes. [1][2][3][4][5][6][7][8][9][10][13][14][15][16][17][18][19][20] On the other hand, ionic liquids (ILs) are receiving much attention in organic synthesis, both as recyclable solvents and/or catalysts. [21][22][23][24][25][26][27][28][29][30][31][32] Because product isolation or catalyst recycling is very easy in ILs and, in some cases, rate accelerations and/or selectivity improvements are also observed, they are regarded as environmentally friendly green solvents.…”

Synthesis of Chalcogenoacetylenes from Diorgano Diselenides and Terminal Acetylenes employing Bi (III)

“…1 The literature shows different methodologies to synthesize these compounds using different metals such as copper, indium or magnesium.…”

New Supported Ionic Liquid as Catalyst for arylation of diorgano diselenides with arylboronic acids

“…A large number of methodologies have been reported to prepare these compounds; however, the reaction often needs harsh reaction conditions or non-recyclable catalysts. 2 In this context, the use of ionic liquids (IL) as recyclable solvent for mild preparation of diorganyl selenides was recently described. 3 On the basis of economic criteria and possible toxicological concerns, it is desirable to minimize the amount of utilized ionic liquid and catalyst in a potential process.…”