Regioselective Syntheses of 1,2-Benzothiazine 1-Imines by Rhodium-Catalyzed Annulation Reactions of Sulfondiimines was written by Bohmann, Rebekka Anna;Schoebel, Jan-Hendrik;Unoh, Yuto;Miura, Masahiro;Bolm, Carsten. And the article was included in Advanced Synthesis & Catalysis in 2019.Computed Properties of C9H10O3S This article mentions the following:
Unprecedented 1,2-benzothiazine 1-imines I (R1 = H, OMe, Me; R2 = Me, cyclopropyl; R3 = H, Me, Ph; R4 = Me, thiophen-2-yl, Ph, etc.; R5 = H, C(O)OC2H5) have been prepared from sulfondiimines 4-R1C6H4S(R2)(=NH)=NR3 by regioselective rhodium-catalyzed annulation reactions with diazo keto esters R4C(O)C(=N2)R5 and α-substituted (pseudo)halo acetophenones R6CH2C(O)C6H5 (R6 = Cl, tosyloxy, mesyloxy) as coupling partners. A representative product was characterized by single crystal X-ray structure anal., and the applicability of the resulting three-dimensional heterocycles I (R1 = H, R2 = Me, R3 = Ph, R4 = 4-bromophenyl, R5 = H) to Buchwald-Hartwig-type amination reactions is shown. In the experiment, the researchers used many compounds, for example, Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8Computed Properties of C9H10O3S).
Ethyl 3-oxo-3-(thiophen-2-yl)propanoate (cas: 13669-10-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. Esters are common in organic chemistry and biological materials.Computed Properties of C9H10O3S
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics