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Efficient Molybdenum Hydrazonato Epoxidation Catalysts Operating under Green Chemistry Conditions: Water vs. Decane Competition

التفاصيل البيبلوغرافية
العنوان: Efficient Molybdenum Hydrazonato Epoxidation Catalysts Operating under Green Chemistry Conditions: Water vs. Decane Competition
المؤلفون: Silvija Mrkonja, Edi Topić, Mirna Mandarić, Dominique Agustin, Jana Pisk
المصدر: Catalysts, Vol 11, Iss 7, p 756 (2021)
بيانات النشر: MDPI AG, 2021.
سنة النشر: 2021
المجموعة: LCC:Chemical technology
LCC:Chemistry
مصطلحات موضوعية: molybdenum, aroylhydrazone, epoxidation, catalysis, organic solvent-free process, TBHP in decane, Chemical technology, TP1-1185, Chemistry, QD1-999
الوصف: Molybdenum compounds containing benzaldehyde-based hydrazones were obtained. The reaction in MeOH resulted with monomeric Mo complexes, [MoO2(L)(MeOH)], while the reaction in dichloromethane (DCM) provided oligomeric complexes, [MoO2(L)]n. The solid-state structures of the obtained compounds were investigated through Infrared Spectroscopy - Attenuated Total Reflection (IR-ATR), Thermogravimetric analysis (TGA), and via X-ray diffraction. The prepared molybdenum species were employed as cyclooctene epoxidation catalysts. TBHP (tert-butylhydroperoxide) in water and TBHP in decane were employed and compared as oxidants, with 0.25 mol% [Mo]. The catalyst activity and selectivity towards epoxide is >90% for all the reactions. The results have been linked to theoretical calculations, showing the importance of the first step, i.e., the transformation of [MoO2(L)(MeOH)] into the pentacoordinate [MoO2(L)].
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2073-4344
Relation: https://www.mdpi.com/2073-4344/11/7/756; https://doaj.org/toc/2073-4344
DOI: 10.3390/catal11070756
URL الوصول: https://doaj.org/article/cd7ba82b23374079a2a2d358c142e235
رقم الأكسشن: edsdoj.7ba82b23374079a2a2d358c142e235
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20734344
DOI:10.3390/catal11070756