A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 6306-52-1, Name is H-Val-OMe.HCl, molecular formula is C6H14ClNO2. In an article, author is Koszelewski, Dominik,once mentioned of 6306-52-1, Application In Synthesis of H-Val-OMe.HCl.
Inclusion and selectivity of amides by p-terphenyl derivative bearing adamantanecarboxylic acid
Hydrogen-bonding compound (1), which is composed of p-terphenyl and adamantanecarboxylic acid, acted as a host molecule for three amides, respectively, forming crystals. Crystals containing the amides (1a and 1b) were produced from N,N-dimethylformamide (DMF) and N,N-diethylformamide (DEF) in 1:2 host:guest complexation stoichiometry, respectively, whereas guest-free crystals (1c) were generated from N-methylformamide (NMF). In the crystal structures of 1a and 1b, carboxylic acids of 1 interact with oxygen atoms of the amide guests through hydrogen bonds to afford network and layer architectures. Crystals 1a and 1b were given from equimolar binary mixtures of DMF or DEF and NMF, respectively. Further, from a mixture of DMF and DEF, guest-inclusion crystals 1d different from 1a and 1b were formed, where DMF was preferentially accommodated. Competition experiments revealed that the selectivity order of 1 for the amide guests was DMF > DEF >> NMF. (C) 2018 Elsevier Ltd. All rights reserved.
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