19117-51-2Relevant academic research and scientific papers
Sulfur ylides 13. Synthesis and intramolecular cyclization of keto-stabilized sulfur ylides
Galin,Sakhautdinov,Lakeev,Egorov,Fatykhov,Maidanova
, p. 2867 - 2872 (2005)
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 cyclization, giving methylthio ketone and oxo benzoate.
