Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, is researched, Molecular C20H12Br2O2, CAS is 119707-74-3, about Asymmetric Traceless Petasis Borono-Mannich Reactions of Enals: Reductive Transposition of Allylic Diazenes.Recommanded Product: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol.
The traceless Petasis borono-Mannich reaction of enals, sulfonylhydrazines, and allylboronates, catalyzed by chiral biphenols, results in an asym. reductive transposition of the in situ generated allylic diazene. Acyclic 1,4-diene products bearing either alkyl- or aryl-substituted benzylic stereocenters are afforded in excellent yields and enantiomeric ratios of up to 99:1. The use of crotylboronates in the reaction results in concomitant formation of two stereocenters in either a 1,4-syn or anti relation from the corresponding E- or Z-crotylboronate used in the reaction. The use of β-monosubstituted enals in the asym. traceless Petasis borono-Mannich reaction of crotylboronates installs tertiary methyl-bearing stereocenters in good yields and high enantioselectivities.
In some applications, this compound(119707-74-3)Recommanded Product: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Bromide – Wikipedia,
bromide – Wiktionary