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Reaction of isothiourea with 2,3-diaza-3-pentenedioic anhydride. A solid-phase synthesis of 3-amino-1,2,4-triazin-5(4H)-ones

✍ Scribed by Rui-Yang Yang; Alan P Kaplan


Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
113 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis


The first reported solid-phase synthesis of 3-amino-1,2,4-triazin-5(4H)-ones is described. Reactions of polymer-bound isothiourea with 2,3-diaza-3-pentenedioic anhydride forms 3-amino-1,2,4-triazin-5(4H)-ones in good yields and high purity.


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## Abstract The quasi‐one pot synthesis of new 2‐aminopyrido[1,2‐__a__][1,3,5]triazin‐4‐ones starting from 2‐amino‐pyridine and 2‐aminopicolines is herein described in order to obtain a library of cyclic guanidines.