1999 organo-selenium compounds, isocyclic C derivatives

organo-selenium compounds, isocyclic C derivativesS 0134

29 - 170Reductive Cleavage of the Se–Se Bond in Diselenides by theSm/HgCl2 System: Formation and Reactions of Samarium Seleno-lates. — Treatment of symmetrical diselenides (I) with metallic samariumand HgCl2 gives samarium selenolates which immediately react with acylchlorides, acid anhydrides, and chloroformate to selenoesters [cf. (III)] andselenoformate (V), respectively. Reaction of the selenolate intermediates withorganic halides, epoxides, and α,β-unsaturated carboxylic acid derivativesprovides a convenient access to unsymmetrical selenides [cf. (VII), (IX), (XI)].— (WANG, LEI; ZHANG, YONGMIN; Heteroat. Chem. 10 (1999) 3, 203-208;Dep. Chem., Hangzhou Univ., Hangzhou 310028, Peop. Rep. China; EN)

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