1,1’ -binaphthalene-2,2’ -diol

Various chiral crown ethers based on [1,1 -binaphthalene]-2.2 -diol, lactose or other chiral 1,2-di-ols were tested as catalyst in the addition of methyl benzcneacetate to methyl 2-propenoate using sodium amide or potassium tert-butoxide as the base. Some pertinent examples are given261 262 396. 

A chiral zirconium catalyst generated from Zr(0,-Bu)4 and (R)-3,3 -diiodo-1,1 -binaphthalene-2,2 -diol [(f )-3,3/-l2BINOL] catalyzed... 

Example of a separation using (+)-(PTrMA) [1,1 -binaphthalene]- 2,2 -diol... 

Arylsulfonylmethyl-substituted dinaphthodioxepins 223 were obtained from arylsulfonylalkynes via Michael reaction. The procedure engages NaH-supported reaction of 1,1 -binaphthalene-2,2 -diol 222 with 220 (Ar = phenyl, tolyl). The procedure can also be performed using (Z)- or (ft)-l-chloro-2-phenylsulfonylethylene and bis(phenylsulfonyl)ethylene, respectively, instead of arylsulfonylalkynes (Scheme 64) <1996SL1481>. 

Enantlo er1cally pure 1,1 -binaphthalene-2,2 -diols are used in various... 

Hovorka M, Gtinrerova J, Zavada J (1990) Highly selective oxidative cross-coupling of substituted 2-naphthols a convenient approach to unsymmetrical 1, 1 -binaphthalene-2, 2 -diols. Tetrahedron Lett 31 413—416... 

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