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Dimethyldioxirane oxidation of the epoxides of (Z)-3-arylidene-1-thioflavanones

✍ Scribed by Albert LÉvai; TamÁs Patonay; GÁbor TÓth; JÓzsef KovÁcs; JÓzsef Jekö


Publisher
Journal of Heterocyclic Chemistry
Year
2002
Tongue
English
Weight
45 KB
Volume
39
Category
Article
ISSN
0022-152X

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✦ Synopsis


Abstract

Sulfur atom of the trans, cis‐ and trans, trans‐epoxides 1 of (Z)‐3‐arylidene‐1‐thioflavanones have been oxidized with dimethyldioxirane to afford the appropriate sulfoxides 2 and sulfones 3 depending on the amount of oxidant used.


📜 SIMILAR VOLUMES


Dimethyldioxirane epoxidation of 3-aryl-
✍ Albert Lévai; JÓZsef Jekő; D. I. Brahmbhatt 📂 Article 📅 2004 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 120 KB

## Abstract Regioselective epoxidation of 3‐aryl‐1‐(3‐coumarinyl)propen‐1‐ones **1–10** by isolated dimethyldioxirane afforded the appropriate epoxides **11–20** in high (76–87%) yields.

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## Abstract 1,3‐Dipolar cycloaddition of __E__‐2‐arylidene‐1‐indanones 1a‐h and Z‐aurones 3a‐c with diazomethane provided __trans__‐spiro‐1‐pyrazolines 2a‐h and 4a‐c, respectively, as sole products. However, the same cycloaddition of Z‐1‐thioaurones 5a‐f afforded a mixture of Z‐α‐methyl‐1‐thioauron