Acceleration of diels-alder reactions by remote methyl groups

Baran, Janusz und Mayr, Herbert (1989): Acceleration of diels-alder reactions by remote methyl groups. In: Tetrahedron, Bd. 45, Nr. 11: S. 3347-3350

Abstract

The hexamethyl substituted bismethylenecyclopentane 1a is 4 to 7 times more reactive towards the acetylenic dienophiles 2 and 3 than the nonmethylated 1,2-bismethylenecyclopentane 1b. This unusual consequence of branching is explained in terms of steric and electronic effects.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie