Tetrahedron Letters p. 3655 - 3658 (1988)
Update date:2022-08-11
Topics:
Eiermann, Uwe
Kriegel, Claus
Neugebauer, Franz A.
Staab, Heinz A.
The pseudoortho (4a) and the pseudogeminal <2.2>(2,5)pyrazinophane (4b) have been synthesized via 1,6-Hofmann elimination of <(5-methyl-2-pyrazinyl)methyl>trimethylammonium hydroxide (2b) and dimerization of the generated 2,5-dihydro-2,5-bis(methylene)pyrazine (3).The molecular structures of both isomers, 4a and 4b, were determined by X-ray analysis.
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