𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation of ethyl 1-hydroxy-2-naphthoates from 1H-2-benzopyran-1-ones: A new method

✍ Scribed by Frank M. Hauser; Stefano A. Pogany

Book ID
112125513
Publisher
Journal of Heterocyclic Chemistry
Year
1978
Tongue
English
Weight
63 KB
Volume
15
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Preparation of 4-hydroxy-3-substituted,
Preparation of 4-hydroxy-3-substituted, 2H-1-benzopyran-2-ones and 2H-1-benzothiopyran-2-ones from carboxylic esters and methyl salicylates or methyl thiosalicylate
✍ Sharon E. Davis; A. Cameron Church; Rebecca C. Tummons; Charles F. Beam 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 305 KB

## Abstract C(α)‐Carboxylic acid esters were treated with excess lithium diisopropylamide, condensed with methyl salicylates or methyl thiosalicylate, followed by acid cyclization to either 4‐hydroxy‐3‐substituted, 2__H__‐1‐benzopyran‐2‐ones (coumarins), or 2__H__‐1‐benzothiopyran‐2‐ones (thiocouma

Facile Synthesis of Substituted Ethyl 2-
Facile Synthesis of Substituted Ethyl 2-(Chloromethyl)-2-hydroxy-2H-1-benzopyran-3-carboxylates
✍ Bhimapaka China Raju; Gannerla Saidachary; Jaladi Ashok Kumar; Balasubramanian S 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 German ⚖ 213 KB

## Abstract Ethyl 2‐(chloromethyl)‐2‐hydroxy‐2__H__‐chromene‐3‐carboxylates **2a**–**2j** have been synthesized by reaction of substituted salicylaldehydes with ethyl 4‐chloro‐3‐oxobutanoate, in the presence of piperidine in CH~2~Cl~2~ at room temperature, in good yields.