Supported Molybdenum Catalysts for Deoxydehydration: An access to olefinic special and fine chemicals from diols and polyols

生物质的利用，特别是用于特种或精细化学品，需要有选择的去功能化方法。目前的脱氧方法往往会导致原料的C-C键严重断裂。虽然也可以在生产散装化学品时使用复杂的产品混合物，但温和、高选择性的分步除氧似乎有利于特种和精细化学品的生产。脱氧脱水(DODH)是近年来发现的一类很有潜力的反应类型，它可以从二元醇中立体选择性地合成烯烃。进一步提高反应重要性的关键挑战是开发成本效益高、活性好、选择性好和稳定的催化剂，这些催化剂最终可以用于工艺过程。因此，需要研究开发合适的钼催化剂来代替昂贵的Re，并使其能够在固体催化剂上反应而不是在分子化合物上反应。总而言之，有希望转化为新化合物的方法将变得容易实现。

The use of biomass, in particular for specialty or fine chemicals, requires selective methods of defunctionalization. Current deoxygenation methods often lead to a significant C-C bond breakage of the raw materials. While it is also possible to utilize complex product mixtures in the production of bulk chemicals, a mild, stepwise deoxygenation with high selectivity appears advantageous for the production of specialty and fine chemicals. As a reaction class with great potential, the deoxydehydration (DODH) has been found in recent years, in which olefins can be prepared stereoselectively from diols. The key challenge in furthering the importance of the reaction is to develop cost-effective active, selective and stable catalysts that can ultimately be used in a technical process. Therefore, research is needed to develop suitable molybdenum catalysts instead of the expensive rhenium, and to allow them to react on solid catalysts instead of molecular compounds. All in all, promising transformations to novel compounds will become accessible.