Sulfur ylides 13. Synthesis and intramolecular cyclization of keto-stabilized sulfur ylides

…, IM Sakhautdinov, SN Lakeev, VA Egorov…

Index: Galin; Sakhautdinov; Lakeev; Egorov; Fatykhov; Maidanova Russian Chemical Bulletin, 2005 , vol. 54, # 12 p. 2867 - 2872

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Abstract

Abstract Keto-stabilized sulfur mono-and bisylides were obtained from N-phthalylglutamic acid and their intramolecular cyclization was studied. The intramolecular cyclization of the ylide obtained at the α-carboxy group gave a product of the pyrrolizidinedione structure; bisylide yielded a cycloheptene derivative as the result of intramolecular recombination of intermediate dicarbene. The ylide obtained at the γ-carboxy group underwent no ...