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Minimal Covers ofQ+(2n+ 1,q) by (n− 1)-Dimensional Subspaces

✍ Scribed by J. Eisfeld; L. Storme; P. Sziklai

Book ID
110333312
Publisher
Springer
Year
2002
Tongue
English
Weight
99 KB
Volume
15
Category
Article
ISSN
0925-9899

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## Abstract Nucleophilic addition of alkyl‐ and benzylthiols to benzoquinone diimine (**1**) gave the corresponding 3‐alkylthio‐ or 3‐benzylthio‐1,4‐phenylenediamines (**2**–**5**). However, addition of aryl‐ or heteroarylthiols to **1** formed 2‐arylthio‐ or 2‐heteroarylthio‐1,4‐phenylenediamines