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Derivate des 5, 6‐Dihydro‐ p ‐dithiin‐2, 3‐dicarbonsäureanhydrids, II: N‐Amino‐imide und cyclische Hydrazide
Author(s) -
Schweizer H. R.
Publication year - 1969
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.19690520807
Subject(s) - hydrazide , chemistry , imide , hydrazine (antidepressant) , organic chemistry , medicinal chemistry , biochemistry
5. 6‐Dihydro‐ p ‐dithiin‐2. 3‐dicarboxylic anhydride reacts with hydrazine to form the N‐amino‐imide; the six‐membered cyclic hydrazide is formed only in minor amounts. 1‐Substituted and 1. 1‐disubstituted hydrazines form exclusively N‐amino‐imides. All N‐amino‐5.6‐dihydro‐ p ‐dithiin‐2. 3‐dicarboximides have fairly strong, bright greenish‐yellow colours, but are of no practical value as dyes or pigments.