- Synthesis and characterization of 3,5-lutidinyl chalcogen and -dichalcogen compounds: X-ray crystal structure of bis(3,5-dimethyl-2-pyridyl) diselenide and 2,6-bis(selenomethyl)-3,5-lutidine
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The synthesis of 3,5-lutidinyl chalcogen and -dichalcogen compounds has been described by a method involving selective mono- and dilithiation of 3,5-lutidine (1) ring. The selective mono- and dilithiation of 1 has been achieved by reacting BF3-complexed 3,5-lutidine (2) with 1 and 2 equiv of LTMP/LDA respectively. The subsequent insertion of elemental selenium followed by aerial oxidation or quenching with iodomethane leads to the formation of bis(3,5-dimethyl-2-pyridyl) diselenide (5) and 2,6- bis(selenomethyl)-3,5-lutidine (7) respectively. In addition, sequential incorporation of sulfur and selenium atom in the same lutidine ring has been reported for the first time. Single-crystal X-ray studies of (5), having a rare C-Se-Se-C torsion angle of 180°(4), and (7) have also been reported.
- Dhau, Jaspreet S.,Singh, Amritpal,Dhir, Rupy
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- The Synthesis and Some Reactions of Novel Pyridine-2(1H)-thiones
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The use of methyl 3-mercaptopropionate for the conversion of halogenated pyridins to pyridine thiones and thiols is described, and limitations of the reaction discussed.S-Alkylation and oxidation reactions of the products from these reactions are reported.
- Dunn, A. D.,Norrie, R.,L'Hostis, J.,Marjot, S.
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p. 119 - 125
(2007/10/02)
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