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ChemInform Abstract: Two-Step Synthesis of 1,3-Disubstituted 3,4-dihydro-4-thioxoquinazolin-2(1H)-ones from 1-Bromo-2-fluorobenzenes.

✍ Scribed by Kazuhiro Kobayashi; Toshihide Komatsu; Yuki Yokoi; Hisatoshi Konishi

Publisher
John Wiley and Sons
Year
2011
Weight
35 KB
Volume
42
Category
Article
ISSN
0931-7597

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✦ Synopsis

Two-Step Synthesis of 1,3-Disubstituted 3,4-dihydro-4-thioxoquinazolin--2(1H)-ones from 1-Bromo-2-fluorobenzenes. -Benzothioamides (III) undergo addition-substitution with phenyl isocyanate (IV) to give the desired thioxoquinazolinones (Va)-(Vc) in good yields. No reaction is observed for (IIId) irrespective of the reaction time. The method can be applied to other isocyanates (VI). -(KOBAYASHI*, K.;

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