I found the field of Chemistry very interesting. Saw the article Tetramethylguanidine-functionalized nanosize gamma-Al2O3 as a novel and efficient catalyst for the four-component synthesis of pyrazolopyranopyrimidine derivatives published in 2021.0. Recommanded Product: 3,4-Dimethoxybenzaldehyde, Reprint Addresses Mamaghani, M (corresponding author), Univ Guilan, Fac Sci, Dept Chem, POB 41335-1914, Rasht, Iran.. The CAS is 120-14-9. Through research, I have a further understanding and discovery of 3,4-Dimethoxybenzaldehyde
A heterogeneous organic-inorganic hybrid durable nanocatalyst gamma-Al2O3@Silane-TMG was prepared by covalently functionalization of nano-gamma-Al2O3 through anchored 3-chloropropyl- trimethoxysilane with 1,1,3,3-tetramethylguanidine (TMG). The structure of the catalyst was characterized by various techniques including FT-IR, XRD, SEM, EDX and TGA analyses. The synthesized nanocatalyst was successfully used in an efficient and green four-component synthesis of pyrazolopyranopyrimidine derivatives using ethyl acetoacetate, hydrazine hydrate, arylaldehydes and barbituric acid (or thiobarbituric acid) in H2O at 40 oC. This practical method produced the desired products at reduced reaction times (10-25 min) and high to excellent yields (85-98%). The main advantages of this practical method are the use of heterogeneous basic nanocatalyst, simple work-up procedure with no need to chromatographic purification, affording highly selective conversion and recyclability of the catalyst which could be used in 5 cycles with only a small decrease in its activity. [GRAPHICS] .
Welcome to talk about 120-14-9, If you have any questions, you can contact Keshavarz, M; Mamaghani, M; Dekamin, MG; Nikpassand, M or send Email.. Recommanded Product: 3,4-Dimethoxybenzaldehyde
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