The stereochemistry of the [2+2]-cycloadditions of cyclopentyne - evidence for an antisymmetrical singlet ground state

Autor: Lutz Fitjer, Said Modaressi
Rok vydání: 1983
Předmět:
Zdroj: Tetrahedron Letters. 24:5495-5498
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)94121-2
Popis: Cyclopentyne 2 , as generated from dibromomethylenecyclobutane 1 , adds stereospecifically cis to both cis - and trans -2-butene and prefers 1,2-to 1,4-addition with 1,3-butadiene. This points to an antisymmetrical singlet ground state of the cyclopentyne diradical.
Databáze: OpenAIRE