Tetrahedron p. 9503 - 9516 (1992)
Update date:2022-07-29
Topics:
Hovorka
Scigel
Gunterova
Tichy
Zavada
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 of sodium naphtholates with anhydrous copper(II) chloride - were also studied. All these methods enable a simple and high-yield access to the unsymmetrically substituted binaphthols. A successful optical resolution of methyl 2,2'-dihydroxy-1,1'-binaphthalene-3-carboxylate by means of liquid chromatography on triacetylcellulose and the subsequent configurational correlation with a binaphthol derivative of known absolute configuration is reported.
View MoreContact:852-27701081
Address:Room 2509, New Tech Plaza, 34 Tai Yau St., San Po Kong, HK
Contact:86-516-66656369
Address:The west road of Huaihai, Xuzhou, China
Taizhou KEDE Chemical.Co.,Ltd.
Contact:86-576-84613060
Address:Jiangkou Chemical Zoon
Xiamen Huasing Chemicals Co.Ltd.
Contact:0086-592-6228397
Address:NO.24, Xinglin North 2nd Road,Jimei district
ABA Chemicals (Shanghai) Limited
Contact:021- 5115 9199-232
Address:Suite 18D, #201 Ningxia Road,
Doi:10.1021/jo00303a001
(1990)Doi:10.1055/s-0030-1259096
(2011)Doi:10.3987/COM-89-S14
(1990)Doi:10.1039/c0cp01921f
(2011)Doi:10.1016/j.poly.2011.01.007
(2011)Doi:10.1016/S0040-4039(00)94632-X
(1990)