Rh(III)-Catalyzed C-H Functionalization of N-Nitrosoanilines with α-Sulfonylcarbenes was written by Peng, Rui-jun;Chen, Lei;Zhang, Xue-jing;Yan, Ming. And the article was included in Advanced Synthesis & Catalysis in 2022.Reference of 62020-09-1 This article mentions the following:
A Rh(III)-catalyzed ortho C-H functionalization of N-nitrosoanilines with α-sulfonylcarbenes had been developed. The reaction was carried out under mild conditions and fuctionalized N-nitrosoanilines I [R1 = H, 4-Me, 5-Cl, etc.; R2 = Me, Et, i-Pr, Bn; R3 = Me, Ph, 4-MeC6H4; R4 = C(O)Me, CO2Me, C(O)Ph, SO2Ph, naphthalene-2-carbonyl] were obtained with good to excellent yields. The diverse transformations of the products to ortho-functionalized anilines and nitrogen heterocycles were achieved. Furthermore, a cascade reaction of N-nitrosoanilines and α-sulfonyl-α-diazo-ketones provided 3-sulfonyl-indoles II [R5 = H, 5-F, 6-Cl, etc.; R6 = Me, Bn; R7 = Me, Ph, 2-naphthyl; R8 = Me, Ph, 4-MeC6H4] efficiently. In the experiment, the researchers used many compounds, for example, Methyl 2-(methylsulfonyl)acetate (cas: 62020-09-1Reference of 62020-09-1).
Methyl 2-(methylsulfonyl)acetate (cas: 62020-09-1) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Reference of 62020-09-1
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics