Molybdenum compounds in organic synthesis

Liquid-Phase Epoxidation of Light Olefins over W and Nb Nanocatalysts

“…Interest in epoxidation of olefins has been amplified because it provides a straightforward access to various active epoxides as industrially important intermediates and essential building blocks for everyday chemicals. Epoxides are among the most versatile and tremendously useful precursors in organic synthesis. − They are key components for the synthesis of a variety of valuable downstream products such as diols, aminoalcohols, allylic alcohols, ketones, polyethers, etc., − which can be further transformed to surfactants, antistatic or corrosion protecting agents, plasticizers, and additives for laundry detergents, lubricating oils, textiles, cosmetics, epoxy resins, and complex molecules used to manufacture air-craft hulls, perfumes, and pharmaceuticals activities. − Due to the strain associated with the three membered ring, epoxides are spring-loaded for reactions with different nucleophiles, leading to a wide range of multifunctional organic compounds . Therefore, the catalysis community has been fascinated with prospects of selective synthesis of epoxides by olefin epoxidation. − …”

Chromogenic Amorphous MoO3–x Nanosheets and Their Nanostructured Films for Smart Window Applications

“…Molybdenum compounds (MoX; X: oxygen, sulfur, carbon, etc.) have gained attention over the past few decades owing to their versatile functionalities, including photo- and electro-chromism, photocatalysis, and catalysis for organic synthesis; furthermore, they are implemented in sensors, fuel cells, and batteries. − Among these compounds, molybdenum trioxides (MoO 3 ), representative of the oxide group, have been recognized as highly chromogenic ceramics for smart window applications that vary in appearance in response to external triggers, including variations in light or electronic, mechanical, and thermal changes. − Under an air atmosphere, the coloration of MoO 3 is explained by the following processes: excitation energy exceeding the optical band gap induces the generation of holes and electrons in MoO 3 . , The generated electrons are captured by the conduction band of MoO 3 . The holes trigger the splitting of adsorbed water from the atmosphere on the surface of MoO 3 .…”

Recent Advances in Facile Liquid Phase Epoxidation of Light Olefins over Heterogeneous Molybdenum Catalysts

“…[25] Several groups reviewed and summarized the performance of Mo complexes as catalysts for various reactions including epoxidation reaction in last decade. [26] However, there demands comprehensive review of solid-phase immobilized Mo complexes for epoxidation reactions in liquid phase. Seven years ago, Vaz et al [27] categorized and summarized the immobilization of various Mo complexes on MCM-41 and MCM-48 supports and their performance for olefin epoxidation and metathesis reactions.…”