INTRODUCTION
The bi-naphthol moiety is a colorless solid. The structure depicts two naphthol rings joined at the respective 1-positions. The presence of two hydroxy groups renders the molecule highly reactive and the product forms a backbone of a variety of value-added chemicals and ligands.
Synonyms | 1,1’-bi-2-naphthol |
CAS no. | 602-09-5 |
EINECS no. | 210-014-0 |
Molecular formula | C2OH14O2 |
Structure | (download pdf to view) |
Molecular weight | 286.32 |
APPLICATIONS
The bi-naphthyl structure serves as an important ligand for asymmetric synthesis in organic chemistry, especially in Diels-Alder reactions, carbonyl addition and reductions.
Some key applications are:
2,2’-bis(diphenylphosphino)-1,1’-binaphthyl (BINAP) |
(S)-Binol by resolution of the mother binol |
(R)-Binol in the same resolution process |
Aluminium Lithium bi(binaphthol) (its (R)-enantiomer) |
(S)-Vanol |
A very recent but path-breaking application of Binol has been in preparation of one of the Covid-19 vaccines being developed and supplied from India.
SPECIFICATIONS
TEST | UNIT | SPECIFICATION |
---|---|---|
Appearance | – | White to off-white powder |
Identification By IR | – | Conforms to reference spectrum |
Identification By Proton NMR | – | Conforms to reference spectrum |
Purity By HPLC | % | NLT 99.0 |
Moisture | Wt. % | NMT 0.5 |
STORAGE
The product is stored at ambient temperature.
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