A versatile method for preparation of O-alkylperoxycarbonic acids: epoxidation with alkyloxycarbonylimidazoles and hydrogen peroxide
✍ Scribed by Youko Tsunokawa; Shigeo Iwasaki; Shigenobu Okuda
- Book ID
- 104220774
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- French
- Weight
- 221 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0040-4039
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## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
## Abstract It was found that __tert__‐BuNH~2~ is an efficient catalyst for epoxidation of __α__,__β__‐unsaturated ketones with 30% H~2~O~2~ under mild conditions. For most of the cyclic unsaturated ketones used, moderate to excellent yields (45%–93%) were obtained within 24 h period.
The system comprised of manganese(II) acetate or sulfate, 1,4,7-trimethyl-1,4,7-triazacyclononane (TMTACN) and ascorbic acid efficiently catalyzes the epoxidation of olefins and the oxidation of alcohols with hydrogen peroxide. For example, in the presence of as little as 0.03 mol% of Mn 2÷, methyl