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. 123-11-5, Name is 4-Methoxybenzaldehyde, molecular formula is C8H8O2. In an article, author is Venkatanna, Kesa,once mentioned of 123-11-5, Category: indole-building-block.
A conformationally rigid chiral bicyclic skeleton tethered bipyridine-Zn(OTf)(2) complex facilitated the enantioselective Friedel-Crafts alkylation of indoles with trans-beta-nitroarylalkenes in an enantioselective manner at elevated temperature. Indoles reacted smoothly with beta-nitroarylalkenes to generate the corresponding 3-(2-nitroalkyl) indoles in good to excellent yields (up to 94%) with moderate to excellent enantioselectivities (up to 91%). The stereochemical outcome of the product from indole and trans-beta-nitrostyrene in the presence of the CRCB tethered bipyridine-Zn(OTf)(2) complex and the DFT calculation of the CRCB tethered bipyridine-Zn: trans-beta-nitrostyrene complex support the si-face attack of indole on trans-beta-nitrostyrene.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles