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Efficient syntheses of the versatile phthalide building blocks, 5,6-diaminoisobenzofuran-1(3H)-one and 5H,7H-furo[3,4-f][2,1,3]benzothiadiazol-5-one

✍ Scribed by Balázs Molnár; Gyula Simig; Tibor Bakó; András Dancsó; Balázs Volk

Book ID
113930729
Publisher
Elsevier Science
Year
2012
Tongue
French
Weight
308 KB
Volume
53
Category
Article
ISSN
0040-4039

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## Abstract (__R__)‐5‐(diallylamino)‐5,6‐dihydro‐4__H__‐imidazo[4,5,1‐__ij__]quinolin‐2(1__H__)‐one (__12b__) was prepared in 9% overall yield from 3‐aminoquinoline. Reaction of __12b__ in ethyl acetate with tritium gas in presence of a 5% platinum on carbon catalyst afforded a mixture of (__R__)‐5