Tetrahedron

Investigations on the structure of 1-dimethylaminoallylalkali compounds

J Weston, H Ahlbrecht

Index: Weston, Jennie; Ahlbrecht, Hubertus Tetrahedron, 1999 , vol. 55, # 8 p. 2289 - 2306

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Citation Number: 10

Abstract

Structural investigations (NMR) show that both 1-dimethylaminoallyllithium (4) and potassium (2) exist exclusively in the endo conformation in THF. Ab initio calculations also conclude that the endo-structure is thermodynamically more stable than the exo- conformation. Cryoscopic measurements indicate that the potassium compound 2 is a monomer under the experimental conditions studied here. The lithium compound 4 ...