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首页> 外文期刊>Catalysis science & technology >Integration of heterogeneous catalysts into complex synthetic routes: sequential vs. one-pot reactions in a (Knoevenagel + Mukaiyama-Michael + hydrogenation + transesterification) sequence
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Integration of heterogeneous catalysts into complex synthetic routes: sequential vs. one-pot reactions in a (Knoevenagel + Mukaiyama-Michael + hydrogenation + transesterification) sequence

机译：将异质催化剂整合到复杂的合成途径中：（knoevenagel + mukaiyama-michael +氢化 +固定序列）中的顺序与一锅反应序列

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Heterogeneous catalysts of different nature can be combined in one-pot tandem reactions, but the compatibility issues of catalysts with reagents, products, and by-products make more convenient the application of a sequential procedure, in which the catalyst is filtered after each reaction and the crude is used in the following reaction without purification. In this way the recovery and reuse of each catalyst can be optimized to obtain the maximum productivity. The nature of the reactions, and the catalysts involved in them, conditions the maximum number of successive steps in the sequence. In the case of the (Knoevenagel + Mukaiyama-Michael + hydrogenation + transesterification) process tested in this work, the optimal results are obtained when the sequential method is applied to only three reactions, whereas the four reactions sequence shows limitations in the yield of the last transesterification step.
机译：可以将不同性质的异质催化剂组合成一锅串联反应，但是催化剂与试剂，产物和副产品的兼容性问题使得更方便地应用了顺序的程序，其中催化剂在每个反应和每个反应和反应后都会过滤催化剂，并且 原油用于以下反应而无需纯化。 这样，可以优化每个催化剂的恢复和重复使用，以获得最大的生产率。 反应的性质及其涉及的催化剂，条件是序列中连续步骤的最大数量。 对于（knoevenagel + mukaiyama-michael +氢化 +固定化）在这项工作中测试的过程，当顺序方法仅应用于三个反应时，将获得最佳结果，而四个反应序列显示出在该工作中的限制，则显示了四个反应的限制。 最后的式步骤。

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