Procter, David J. published the artcileSynthesis of (R)-4,5-dihydro-3H-dinaphtho[2,1-c:1′,2′-e]selenepin oxide and preliminary studies on its use in the oxidation of sulfides, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), the publication is Synthetic Communications (2000), 30(16), 2975-2987, database is CAplus.
The first synthesis of the title compound (R)-I was achieved from (R)-(+)-1,1′-bi-2-naphthol, which in turn was obtained by resolution of rac-1,1′-bi-2-naphthol. Palladium catalyzed alkoxycarbonylation of ditriflate II (R = OSO2CF3) gave di-Me ester II (R = COOMe), which was then reduced and the resultant diol converted to key intermediate chloride II (R = CH2Cl). Cyclization with sodium selenolate gave novel enantiomerically pure selenide, which upon oxidation yielded the desired selenoxide (R)-I. Preliminary studies on the oxidation of sulfides to sulfoxides using I and 2,2,2-trifluoroethanesulfonic acid are also described.
Synthetic Communications published new progress about 126613-06-7. 126613-06-7 belongs to esters-buliding-blocks, auxiliary class Chiral Diphenols, name is (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate), and the molecular formula is C22H12F6O6S2, Recommanded Product: (R)-[1,1′-Binaphthalene]-2,2′-diyl bis(trifluoromethanesulfonate).
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics