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. 6117-80-2, Name is (Z)-But-2-ene-1,4-diol, molecular formula is C4H8O2. In an article, author is Vazdar, Katarina,once mentioned of 6117-80-2, HPLC of Formula: C4H8O2.
A computational study of regioselectivity in beta-lactam iminothiazolidinone formation
Density functional theory calculations were performed to explain the different regioselectivity for the formation of p-lactam iminothiazolidinones. Computational results were in agreement with experimental observations that phenyl and cyclohexyl derivatives led to the thermodynamically more stable regioisomers formed by cyclization at the nitrogen atom directly attached to the beta-lactam ring which was in contrast to the n-hexyl derivative where the regioisomer with the beta-lactam ring attached to the imino bond is more stable instead. It was demonstrated that the different regioselectivity was the consequence of larger steric effects when bulky substituents and the leaving ethoxy group were in close contact during the cyclization step. (C) 2015 Elsevier Ltd. All rights reserved.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 6117-80-2, you can contact me at any time and look forward to more communication. HPLC of Formula: C4H8O2.
Reference:
Thiazolidine – Wikipedia,
,Thiazolidine – ScienceDirect.com