10.1021/j100350a029
The study investigates the sonochemistry of argon-saturated water-alcohol mixtures using ESR and spin trapping with 3,5-dibromo-4-nitrosobenzenesulfonate (DBNBS). It examines free-radical intermediates induced by 50-kHz ultrasound in aqueous solutions of ethanol, 1-propanol, 2-propanol, and 2-methyl-2-propanol. The chemicals involved include various alcohols (ethanol, 1-propanol, 2-propanol, 2-methyl-2-propanol, methanol), water (H2O), deuterated water (D2O), and DBNBS as the spin trap. The alcohols serve as the primary solutes under investigation, while water and deuterated water act as solvents and provide isotopic labeling for tracking reactions. DBNBS is crucial for capturing and identifying radicals formed during sonolysis through its spin adducts. The study identifies spin adducts typical of thermal decomposition of the alcohols and of H- and OH-induced abstraction reactions, observes isotopically mixed radicals in mixed-isotope systems, and examines the effects of solvent composition and temperature on the sonochemical yields of radicals.
10.1021/ja047597t
n-Propanol (nPrOH) is a simple primary alcohol. Its presence and concentration can significantly affect the reaction outcome, including yield and selectivity. It is used as a cosolvent in the reaction mixture to help more effectively capture cationic silicon species, thereby improving diastereoselectivity. tert-Butyl methyl ether (tBuOMe) is an ether solvent that enhances the solubility and reactivity of the reactants, thereby improving the reaction yield and selectivity. It is used in combination with toluene as a cosolvent. These chemicals are integral to the catalytic aldol reactions, enabling the efficient and selective synthesis of a-hydroxy-?-amino acid derivatives.
10.1016/0022-3697(87)90030-8
This research presents a comprehensive study on the synthesis and crystal structure of the ferromagnetic chain system (C,D,,ND,)CuBr, also known as perdeutero cyclohexylammonium copper(II) bromide (CHAB-D,,). The purpose of the study was to understand the one-dimensional S = 1/2 Heisenberg ferromagnet properties of this compound and to determine its crystal structure using neutron diffraction. The researchers synthesized single crystals of CHAB-D,, and found that its crystal structure is isomorphic with that of its hydrogenated counterpart, CHAC, with orthorhombic symmetry and space group P2,2,2,. The ferromagnetic Cu-chains run along the c-direction, with two bromine ligands forming symmetrical bridges between copper ions. The study concluded that the deuterated compound offers the possibility to study an almost perfect realization of a ferromagnetic 1D S = 1/2 XXZ system using neutron scattering techniques, and that the magnetic properties of the deuterated and hydrogenated versions of CHAB are identical within experimental accuracy limits. Key chemicals used in the process included cyclohexylammonium bromide, copper(II) bromide, and partially deuterated n-propanol as a solvent.
10.1016/S0008-6215(00)80546-7
The research details an investigation into the reaction of diglycolaldehyde with various alcohols in acid media, focusing on how the degree of α-substitution of the alcohol affects the nature of the products formed. The study aimed to understand the influence of alcohol substitution on the formation of acetals and cyclic compounds. The researchers found that the proportion of cyclic acetals increased with higher α-substitution in the alcohols. They used methanol, ethanol, 1-propanol, 2-propanol, and 2-methyl-2-propanol, among others, to react with diglycolaldehyde under both room temperature and reflux conditions. The products were separated by distillation, and the mixtures of cyclic isomers were resolved by column chromatography. The study concluded that diglycolaldehyde bis(dimethyl acetal) was the only acetal isolated when methanol was used, while mixtures of acyclic acetals and stereoisomers of 2,6-dialkoxy-1,4-dioxanes were obtained with other alcohols. The reactions were assumed to have reached equilibrium, and the results suggested that the nature of the products was significantly influenced by the alcohol's α-substitution degree.
F, 
Xi
F:Flammable;
