Qian, Hui published the artcileOrganocatalytic Enantio- and Diastereoselective Synthesis of 1,2-Dihydronaphthalenes from Isobenzopyrylium Ions, Quality Control of 7080-50-4, the publication is Journal of the American Chemical Society (2015), 137(2), 560-563, database is CAplus and MEDLINE.
A highly efficient asym. synthesis of dihydronaphthalenes I [R1 = H, 7-Me, 6-F, etc; R2 = Ph, 4-Me-C6H4, 4-OMe-C6H4, etc; Ar = Ph, 4-OMe-C6H4, 4-Me-C6H4, etc.] is disclosed. The process represents a new addition to the limited asym. reactions of isobenzopyryliums, a family of versatile 10π-electron aromatic species. Excellent asym. induction is achieved for the first time without an anchoring group in the 4-position or a metal catalyst, both of which were required previously in these reactions. The success is attributed to the unusual chiral counteranion (meanwhile also the nucleophile) generated in situ from the chiral phosphate and the boronic acid as well as the leaving group. Preliminary control experiments provided important insight into the reaction mechanism.
Journal of the American Chemical Society published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C7H13ClNNaO5S, Quality Control of 7080-50-4.
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