130520-10-4Relevant academic research and scientific papers
Heterocycles by Cycloaddition. Part 9. Bridged Heteroannulenes by Cycloaddition-Extrusion-Ring-expansion Reactions of Mesoionic Compounds with Benzocyclopropene. A Methanothiazonine, a Methanothionine, and a Methanothiecinone
Kato, Hiroshi,Toda, Shigeo,Arikawa, Yukihiko,Masuzawa, Mayumi,Hashimoto, Masafumi,et al.
, p. 2035 - 2040 (2007/10/02)
A methanothiazonine (13) was formed by cycloaddition-extrusion-ring expansion of benzocyclopropene with a mesoionic oxathiazoliumolate (12).The reaction with a dithioliumolate (14) gave the cycloadduct (15), from which a methanothionine (16) and a methano
