## Abstract Various 2โarylbenzimidazoles were synthesized from phenylenediamines and aromatic aldehydes __via__ a oneโstep process in the presence of a catalytic amount of a cobaltโsalen complex supported on activated carbon [CoxOโCo(salen) **11**] at room temperature. The salient features of this
Mn(III) salen complex: an efficient reusable acylation catalyst
โ Scribed by Boyapati Manoranjan Choudary; Mannepalli Lakshmi Kantam; Balagam Bharathi; Chinta Reddy Venkat Reddy
- Book ID
- 104421320
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 92 KB
- Volume
- 168
- Category
- Article
- ISSN
- 1381-1169
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โฆ Synopsis
Acylation of alcohols in an efficient manner using [N,N -ethylene bis(salicylideneaminato)] manganese(III) chloride [Mn(III) salen complex 1] with anhydrides/acetic acid under novel heterogeneous media is reported for the first time.
๐ SIMILAR VOLUMES
Salen)Mn(III) catalysts show increased turnover numbers in the catalytic asymmetric epoxidation of conjugated olefins upon addition of bulky Lewis acids (LA) such as zinc tetraphenylporphyrin (ZnTPP). Up to 3-fold increase in total catalytic activity and at least a 20-fold increase in catalyst stabi
Acetylation of various alcohols and phenols was performed successfully using an immobilized cobalt(II) catalyst in high yield. The catalyst shows high thermal stability and was also recovered and reused at least 10 times without any considerable loss of activity.
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