01169nas a2200181   4500008004100000022001400041245007300055210006900128260000800197490000700205520056700212100002100779700002300800700001900823700001900842700002500861856010100886       2021                        eng d  a1477-052000aConvenient semihydrogenation of azoarenes to hydrazoarenes using H-20 aConvenient semihydrogenation of azoarenes to hydrazoarenes using  cJUN0 v193 a<p>The high atom-economical and eco-benign nature of hydrogenation reactions make them much more superior to conventional reduction and transfer hydrogenation. Herein, a convenient and highly selective hydrogenation reaction of azoarenes using molecular hydrogen to access diverse hydrazoarenes is reported. The present catalytic method is general and operationally simple, and it operates under exceedingly mild conditions (room temperature and 1 atm of hydrogen pressure). The reusability of catalysts used in this method is also successfully demonstrated.</p>1 aSahoo, Manoj, K.1 aSivakumar, Ganesan1 aJadhav, Sanjay1 aShaikh, Samrin1 aBalaraman, Ekambaram  uhttp://library.ncl.res.in/content/convenient-semihydrogenation-azoarenes-hydrazoarenes-using-h-202732nas a2200169   4500008004100000245009100041210006900132260000800201300001600209490000700225520219400232100001802426700002302444700002502467700002502492856004502517       2021                        eng d00aRecent advances in liquid organic hydrogen carriers: an alcohol-based hydrogen economy0 aRecent advances in liquid organic hydrogen carriers an alcoholba  cNOV  a14712-147260 v113 aEnergy storage and the use of abundantly available feedstock without contributing to the carbon footprint are two significant global challenges. In this regard, the development of high-performance, low-cost, sustainable, and environmentally friendly energy storage and production systems is crucial to fulfill the growing energy demands of the current society. The use of hydrogen will diversify energy sources as it significantly reduces greenhouse gas emissions and environmental pollution during energy conversion. Although the hydrogen economy is quite beneficial, hydrogen storage is still very challenging, and the existing methods suffer from a lot of problems and drawbacks. The conventional liquefaction and compression hydrogen storage technologies are associated with several challenges, including low storage density, boil-off losses, relatively high costs, and safety and transportation concerns. In recent years, liquid organic hydrogen carrier (LOHC) systems have attained a lot of importance as a substitute for the traditional storage methods. Hydrogen storage and transport using LOHCs are based on two-step cycles, such as (i) loading/storage of hydrogen by catalytic hydrogenation of H2-lean compounds and (ii) unloading/releasing hydrogen by dehydrogenating the resulting H2-rich liquids. Since alcohols are widely accessible from various industrial processes or even from biomass-derived precursors, the catalytic acceptorless dehydrogenation of alcohols is an attractive approach for future hydrogen storage applications. Hence, the catalytic dehydrogenation-hydrogenation of alcohols can be used for the development of alcohol-based LOHC systems which are economical, safe, and easy to handle. Further, they are similar to crude oils under ambient conditions and thus are suitable for use in the current energy infrastructure. This Review covers several essential aspects of these developing efficient and abundantly available LOHC systems for efficient hydrogen storage and transport applications. Additionally, reversible LOHC systems based on the catalytic dehydrogenation-hydrogenation of alcohols and their corresponding carbonyl compounds have been discussed.1 aYadav, Vinita1 aSivakumar, Ganesan1 aGupta, Virendrakumar1 aBalaraman, Ekambaram  uhttps://doi.org/10.1021/acscatal.1c03283