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[4+2]‐Cycloadditions of Azoalkenes to Azodicarbonyl Compounds. A Novel Facile Route to the 1,2,3,4‐Tetrazine System
Author(s) -
Sommer Sven,
Schubert Ulrich
Publication year - 1979
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197906961
Subject(s) - tetrazine , chemistry , dehydrogenation , combinatorial chemistry , organic chemistry , catalysis
A potential step in the direction of “aromatic” 1,2,3,4‐tetrazine is seen in the synthesis of the first 1,2,3,6‐tetrahydro‐1,2,3,4‐tetrazines (1) . They were obtained from azoalkenes and azodicarboxylic esters. Formerly, only 1,4,5,6‐tetrahydro derivatives were known which cannot be dehydrogenated.