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Search for "milling parameters" in Full Text gives 6 result(s) in Beilstein Journal of Organic Chemistry.
Reaction of oxiranes with cyclodextrins under high-energy ball-milling conditions
Beilstein J. Org. Chem. 2019, 15, 1448–1459, doi:10.3762/bjoc.15.145
- -free components, otherwise CD-hydrates form a hard solid, which sticks to the jar wall, during the salt preparation. While this is currently a considerable drawback for the mechanochemical method, the optimisation of the reagent ratios and milling parameters can offer a truly fine-tunable HPCD
Mechanochemical amorphization of chitin: impact of apparatus material on performance and contamination
Beilstein J. Org. Chem. 2019, 15, 1217–1225, doi:10.3762/bjoc.15.119
- contamination on mills samples was tested by inductively coupled plasma optical emission spectrometry (ICP–OES) and X-ray photoelectron spectroscopy. Results and Discussion Study of chitin amorphization as a function of medium hardness In this study, we probed the effect of milling parameters on the performance
Mechanochemical synthesis of hyper-crosslinked polymers: influences on their pore structure and adsorption behaviour for organic vapors
Beilstein J. Org. Chem. 2019, 15, 1154–1161, doi:10.3762/bjoc.15.112
- chemical and milling parameters on the yield and surface area of the resulting polymer. Results and Discussion Polymer synthesis and characterization In our standard procedure HCP was synthesised via a mechanochemical reaction. This was accomplished by transferring BCMCP (4,4’-bis(chloromethyl)-1,1
Mechanochemical synthesis of poly(trimethylene carbonate)s: an example of rate acceleration
Beilstein J. Org. Chem. 2019, 15, 963–970, doi:10.3762/bjoc.15.93
- rate enhancements compared to polymerizations in solution. A number of milling parameters were evaluated for the ball-milling polymerization. Temperature increases due to ball collisions and exothermic energy output did not affect the polymerization rate significantly and the initial mixing speed was
- -controlled chain lengths. The previous examples on mechanochemical poly(lactic acid) synthesis resulted in broader molecular weight distributions due to the fast propagation rate [13][14]. Variations of the ball-milling parameters were then scrutinized (Table 2). Firstly, the vibration frequency was varied
Bromide-assisted chemoselective Heck reaction of 3-bromoindazoles under high-speed ball-milling conditions: synthesis of axitinib
Beilstein J. Org. Chem. 2018, 14, 786–795, doi:10.3762/bjoc.14.66
- ]. Adjusting of mechanical parameters Having identified the optimal chemical conditions for the reaction selectivity on the basis of the reaction pathway, we then focussed on the milling parameters such as rotation speed (νrot), ball milling time (t), milling ball filling degree (ФMB), and milling ball
Influence of the milling parameters on the nucleophilic substitution reaction of activated β-cyclodextrins
Beilstein J. Org. Chem. 2017, 13, 1893–1899, doi:10.3762/bjoc.13.184
- effect on the nucleophilic reaction. Keywords: cyclodextrins; milling parameters; nucleophilic substitution; planetary ball mill; Introduction Their hollow structures make cyclodextrins (CDs) a class of carbohydrates that can form inclusion complexes with organic molecules, inorganic salts and complex
- (Supporting Information File 1, Table S1, entries 1–4). Considering that the preparation of Ts-β-CD is laborious [24][25], its commercial availability is restricted by high costs and limited number of producers, the systematic investigation on the influence of the milling parameters on the reaction outcome
- findings lend support to the idea that mechanical activation can induce chemical reactivity [29] and selectivity [30] which is different to that observed in solution, which can be further complicated by the inclusion complex formation property of cyclodextrins. How exactly the milling parameters influence
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