Exact(12)
It shows good performance with respect to product yield, reaction time, energy consumption and product quality.
If reactions (4) and (5) are exactly balanced to yield reaction (6), the ratio of total iron:protons:sulfate should be 1 2 2.
To improve the yield, reaction time was increased up to 3 h but only 33% required conversion was observed (Table 1, entry 2).
In terms of the yield, reaction rate, and S/H ratio, methyl bromoacetate was considered as the optimal acyl donor and used in the following studies.
The response variables were methyl ester content (ME) and acid value (AV) due to their relationship with the completion and yield reaction, respectively.
The chosen strategy illustrates important issues regarding scope, reactivity, product yield, reaction time, reuse and recyclability that will help in designing new synthetic routes for other heterocyclic synthesis.
Similar(48)
This combination is expected to make continuous flow syntheses economical even with lower yield reactions, simultaneously leading to purified products.
One exception was a low-yield reaction that contained 137 MBq of I-124 codrituzumab with good immunoreactivity.
The oxime formation with [18F]FDR is a high-yield reaction that can be performed in room temperature in 10 min.
Of special concern is the effect of the above processes on experiments in which low-yield reaction products are of interest, such as determination of reaction kinetics and isotopic fractionations during pyrite oxidation reactions.
The fluoroglycosylation with [18F]FDR is a very attractive choice for radiolabelling tetrazines with fluorine-18 since it is a high-yield reaction with mild reaction conditions compatible with the inherent instability of tetrazines.
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