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Enantioselective synthesis, also called asymmetric synthesis, [1] is a form of chemical synthesis.It is defined by IUPAC as "a chemical reaction (or reaction sequence) in which one or more new elements of chirality are formed in a substrate molecule and which produces the stereoisomeric (enantiomeric or diastereomeric) products in unequal amounts."
A metal–air electrochemical cell is an electrochemical cell that uses an anode made from pure metal and an external cathode of ambient air, typically with an aqueous or aprotic electrolyte. [1] [2] During discharging of a metal–air electrochemical cell, a reduction reaction occurs in the ambient air cathode while the metal anode is oxidized.
This chemical is pyrophoric, bursting into flame in air or in contact with water. It is generally packaged in toluene. It is generally packaged in toluene. [ 3 ]
Toluene is also found in cigarette smoke and car exhaust. If not in contact with air, toluene can remain unchanged in soil or water for a long time. [39] Toluene is a common solvent, e.g. for paints, paint thinners, silicone sealants, [40] many chemical reactants, rubber, printing ink, adhesives (glues), lacquers, leather tanners, and ...
Air cell or aircel may refer to: Air cell, a prechamber in an Indirect injection internal combustion engine; An electrochemical cell that uses air as a terminal, such as the metal-air electrochemical cell; Using cell phones on aircraft; see mobile phones on aircraft; Mastoid cells, also known as mastoid air cells or air cells, spaces in a bone ...
Enantioselectivity issues associated with the use of BH 3 as the reducing agent for the CBS reduction have been reported. Commercially available solutions of BH 3 •THF evaluated by Nettles et al. were shown to contain trace amounts of borohydride species, which participate in nonselective reductions that led to the diminished ...
When energy is deposited in air, the air molecules become excited. As air is composed primarily of nitrogen and oxygen, excited N 2 and O 2 molecules are produced. These can react with other molecules, forming mainly ozone and nitrogen(II) oxide. Water vapor, when present, may also play a role; its presence is characterized by the hydrogen ...
This page provides supplementary chemical data on toluene. MSDS sheets. Structure and properties. Structure and properties Index of refraction, n D: 1.4969 at 20 °C ...