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Arylierungen von cyclischen Guanidin‐Analogen mit α‐halogenierten Anthrachinonen: neue Anthrapyrimidine
Author(s) -
Adam JeanMarie,
Winkler Tammo,
Rihs Grety
Publication year - 1982
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19820650737
Subject(s) - chemistry , guanidine , stereochemistry , anthraquinones , amino acid , organic chemistry , biochemistry , botany , biology
Arylation Reaction of Cyclic Guanidine‐Analogs with α‐Halo‐ anthraquinones: New Anthrapyrimidines 2‐Amino‐benzimidazole gives on Ullmann ‐reaction with α‐halo‐athraquinones such as 1‐amino‐4‐bromoanthraquinone‐2‐sulfonic acid (la) the new benzimidazo‐anthrapyrimidine 2a , whereas 3‐amino‐ triazole gives under the same conditions two products: the 1,2,4‐triazoloanthrapyrimidine 7 and l‐amino‐4‐(3‐amino‐1,2,4‐ triazolyl)anthraquinone‐2‐sulfonic acid ( 8 ). The new structures were elucidated by 1 H‐ and 13 C‐NMR. and X‐ray analysis.