An efficient method for the dehydrogenative coupling of silanes with alcohols under photocatalysis was developed. The reaction proceeded in the presence of Ru(bpy)3Cl2 (0.5 mol%) under visible light irradiation in acetonitrile at room temperature. The developed methodology was also applicable for the synthesis of silanols using water as a coupling partner.
Active Cobalt Catalyst for the Cleavage of Benzyl Ether
作者:Bo Wang、Zhaojun Yin、Yangbing Li、Ting-Xiang Yang、Xiang-Bao Meng、Zhong-Jun Li
DOI:10.1021/jo2018284
日期:2011.11.18
An improved method for the deprotection of benzylethers using a catalytic amount of Co2(CO)8 in the presence of Me2PhSiH and CO (1 atm) is described. The deprotection reaction is compatible with double bond or sulfur-containing substrates. The method also tolerates other functional groups, such as Ac, Piv, and Bz, and shows potential selectivity in perbenzylated monosaccharides.