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. 540-36-3, Name is 1,4-Difluorobenzene, molecular formula is C6H4F2. In an article, author is Wang Haiyan,once mentioned of 540-36-3, Product Details of 540-36-3.
Self-Assembly Modes of Three Cucurbit[n]urils with Benzoindazole Derivative
A pharmaceutical intermediate, 3-pyridyl benzoxazole derivatives (DIHY), was designed and synthesized as the guest molecule. The self-assembly binding models of tetramethyl cucurbit[6]uril (TMeQ[6]), cucurbit[7]uril (Q[7]) and cucurbit[8]uril (Q[8]) with DIHY were investigated by H-1 NMR, MS, isothermal titration calorimetry and UV-Vis spectrum. The results showed that there are different modes of interaction between these three different cucurbit[n]uril and DIHY. For the TMeQ[6]-DIHY system, the guest molecule is located at the port of the TMeQ[6], while for the Q[7]-DIHY system, the 4,5-dihydro-2H-benzoxazole moiety of the guest molecule reside within the cavity of Q[7] host, whereas the pyridyl group of DIHY guest remains outside of the portal to form the 1 : 1 inclusion complexes of pseudorotaxane structure. Nevertheless, the 4,5-dihydro-2H-benzoxazole moiety of two guest molecule is included in the cavity of Q[8] host in a face to face stacking way, while the pyridine group of DIHY is located at the port of Q[8] to form a 1 : 2 supramolecular structure.
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Reference:
Benzoxazole – Wikipedia,
,Benzoxazole | C7H5NO – PubChem