New discoveries in chemical research and development in 2021, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 121-89-1, Name is 3′-Nitroacetophenone, SMILES is CC(C1=CC=CC([N+]([O-])=O)=C1)=O, in an article , author is SWAYZE, EE, once mentioned of 121-89-1, COA of Formula: https://www.ambeed.com/products/121-89-1.html.
Several derivatives of the new imidazo[4,5-d]isothiazole ring system have been synthesized from the appropriately substituted isothiazolediamines. The reaction of 3-methyl-4,5-diaminoisothiazole (4a) with diethoxy-methyl acetate gave a low yield of 3-methylimidazo[4,5-d]isothiazole (5a). However, the analogous reaction of 4,5-diaminoisothiazole (4b) with diethoxymethyl acetate failed to yield the parent imidazo[4,5-d]isothiazole ring system. The diamines 4a and 4b were readily cyclized with thiocarbonyldiimidazole to give the unstable thiones 6a and 6b, which were alkylated in situ to afford good yields of the corresponding 5-methylthioimidazo[4,5-d]isothiazoles 7a and 7b, respectively. Neither of these compounds could be reduced to the corresponding 5-unsubstituted derivatives via treatment with Raney nickel. To the best of our knowledge, this is the first report of the imidazo[4,5-d]isothiazole ring system.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield. If you are hungry for even more, make sure to check my other article about 121-89-1, COA of Formula: https://www.ambeed.com/products/121-89-1.html.
Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com