2007
Susana Rojas-Lima, Lidia Santillán-Sid, Heraclio López-Ruiz and Alejandro Alvarez-Hernández. Diastereoselective Synthesis of Spiro-?-Lactams via Staudinger Reaction. Heterocycles, 2007, 71, 531-542. ISSN 1881-0942. The Japan Institute of Heterocyclic Chemistry. Japón.
Abstract
In this work, eleven new spiro-?-lactams have been prepared using the Staudinger reaction of isomaleimides (1a-d) and carboxylic acids (chloroacetic acid, (-)-menthoxyacetic acid (7) and an oxazolidinone derived acid (10)) in the presence of triphosgene under mild condition. All reactions have been shown to be stereoselective. The new stereogenic centers were assigned by X-ray diffraction.
Diastereomeric C-glycosyloxanthrones from picramnia antidesma
Preparation of N-aryl-substituted spiro-?-lactams via Staudinger cycloaddition
The Structural Chemistry of N-Monolithium Borazines
Furocoumarins of three species of the genus Dorstenia
Aroylthioureas: new organic ionophores for heavy-metal ion selective electrodes