𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Cyclopropanation reaction of 3-Acyl-2H-1-benzopyran-2-ones with phenacylbromide in phase transfer systems

✍ Scribed by Anka Bojilova; Antoaneta Trendafilova; Christo Ivanov; Nestor A Rodios

Book ID
108371580
Publisher
Elsevier Science
Year
1993
Tongue
French
Weight
819 KB
Volume
49
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Reactions of 3-acyl-substituted 2H-1-ben
Reactions of 3-acyl-substituted 2H-1-benzopyran-2-ones with acid anhydrides, II
✍ Bojilova, Anka ;Rodios, Nestor ;Nicolova, Rositsa ;Ivanov, Christo 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 587 KB

## Abstract 3‐Pivaloyl‐2__H__‐1‐benzopyran‐2‐one (6) reacts with acid anhydrides in the presence of triethylamine to give 4‐(2‐oxoalkyl)‐2‐oxochromans 7 and 3‐pivaloyl‐2‐oxochroman (8) in moderate yields. Also 3‐propionyl‐ and 3‐isobutyryl‐2__H__‐1‐benzopyran‐2‐ones (9) react with acid anhydrides u

Reactions of 2-Amino-4H-1-benzopyran-4-o
Reactions of 2-Amino-4H-1-benzopyran-4-one with 4-Oxo-4H-1-benzopyran-3-carbaldehydes.
✍ Tarun Ghosh; Chandrakanta Bandyopadhyay 📂 Article 📅 2007 🏛 John Wiley and Sons ⚖ 25 KB 👁 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Reactions of 2-amino-4h-1-benzopyran-4-o
Reactions of 2-amino-4h-1-benzopyran-4-one with 4-oxo-4h-1-benzopyran-3-carbaldehydes
✍ Tarun Ghosh; Chandrakanta Bandyopadhyay 📂 Article 📅 2006 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 267 KB 👁 1 views

## Abstract magnified image The title aldehyde **1** reacts smoothly with the enamine moiety of **2**‐aminochromone **2** to produce hitherto unreported 3‐(2‐hydroxybenzoyl)‐5__H__‐1‐benzopyrano[2,3‐__b__]pyridin‐5‐one (azaxanthone) **5**. This reaction has been extended for the synthesis of bisaz