Dalvi, Prashant B. published the artcileRhodium-Catalyzed Regioselective Synthesis of Isocoumarins through Benzothiadiazine-Fused Frameworks, Formula: C7H3Cl2NO2S, the publication is Organic Letters (2016), 18(15), 3706-3709, database is CAplus and MEDLINE.
An unprecedented two-step, one-pot synthesis of benzimidazothiadiazine 5,5-dioxides is presented. Reaction condition based regioselectivity has been achieved where fused benzimidazo[1,2-b][1,2,4]thiadiazines are exclusively formed under thermal conditions, whereas benzimidazo[2,1-c][1,2,4]thiadiazines were created only under microwave irradiation The salient features of this protocol include a regioselective sulfonylation of 2-aminobenzimidazole with o-halo sulfonyl chlorides followed by N-C bond formation. The acid forms of these fused regioisomers have been used to introduce novel guanidine-containing isocoumarin frameworks.
Organic Letters published new progress about 254749-11-6. 254749-11-6 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Nitrile,Benzene, name is 2-Chloro-4-cyanobenzene-1-sulfonyl chloride, and the molecular formula is C7H3Cl2NO2S, Formula: C7H3Cl2NO2S.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics