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ChemInform Abstract: Efficient Synthesis of (3E)-3-[Amino(aryl)methylidene]chromane-2,4-diones (= (3E)-3[Amino(aryl)methylene]-2H-1-benzopyran-2,4(3H)-diones) via a Three-Component Reaction.

✍ Scribed by Elmira Ghabraie; Morteza Bararjanian; Saeed Balalaie; Frank Rominger; Hamid Reza Bijanzadeh

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

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✦ Synopsis

Abstract

Michael‐type addition of hydroxycoumarins (I) towards β‐nitrostyrenes (II) in the presence of ammonium acetate provides access to title amino(aryl)methylenechromanediones (III) in high yields.

📜 SIMILAR VOLUMES

Efficient Synthesis of (3E)-3-[Amino(ary
Efficient Synthesis of (3E)-3-[Amino(aryl)methylidene]chromane-2,4-diones (=(3E)-3-[Amino(aryl)methylene]-2H-1-benzopyran-2,4(3H)-diones) via a Three-Component Reaction
✍ Elmira Ghabraie; Morteza Bararjanian; Saeed Balalaie; Frank Rominger; Hamid Reza 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 German ⚖ 292 KB 👁 1 views

## Abstract The __Michael__‐type addition of a 4‐hydroxycoumarin (=4‐hydroxy‐2__H__‐1‐benzopyran‐2‐one) **1** to a __β__‐nitrostyrene (=(2‐nitroethenyl)benzene) **2** in the presence of AcONH~4~ leads to substituted (3__E__)‐3‐[amino(aryl)methylidene]chroman‐2,4‐diones (=(3__E__)‐3‐[amino(aryl)meth