作者:Alain Grandbois、Marie-Ève Mayer、Marion Bédard、Shawn K. Collins、Typhène Michel
DOI:10.1002/chem.200901295
日期:2009.9.28
Fucntionalizing BINOL: Bis‐NHCCu complexes can be used for the oxidative coupling of 2‐naphthols. Product yields are highest when using electron‐deficient 2‐naphthols. Mixed couplings between electron‐rich and electron‐poor 2‐naphthols can be conducted to give good yields of the mixed products.
Highly selective oxidative cross-coupling of differently substituted 2-naphthols mediated by Cu(II)-tert-butyl amine complexes is described. The “cross”-products are obtained in good to excellent yields and the selectivity up to ⪢90% is observed depending on the substitution of naphthol nuclei. The alternative procedures - the cross-coupling of free naphthols with CuCl(OMe) as well as the coupling
Highly selective oxidative cross-coupling of substituted 2-naphthols: A convenient approach to unsymmetrical 1,1′-binaphthalene-2,2′-diols
作者:Martin Hovorka、Jana Günterová、Jir̆í Závada
DOI:10.1016/s0040-4039(00)94569-6
日期:1990.1
Heterocoupling of 2-naphthols enabled by a copper–N-heterocyclic carbene complex
作者:Michael Holtz-Mulholland、Mylène de Léséleuc、Shawn K. Collins
DOI:10.1039/c3cc38675a
日期:——
The reactivity of a Cu catalyst for oxidative coupling is modulated by a small molecule additive, diethyl malonate, that slows over-oxidation of 2-naphthols. Efficient heterocoupling between electron-rich and electron-poor 2-naphthols/2-naphthylamines affords C1-symmetric BINOLs with yields ranging from 35â98%.