practical transition metal/catalyst/halogen-free dehydrogenative coupling of aldehydes with N-hydroxyimides promoted solely by tert-butyl nitrite under mild conditions was developed. tert-Butyl nitrite generates two radicals (tBuO and NO) and thus works as a twofold hydrogen abstractor. A diverse array of N-hydroxyimide esters were prepared from either aliphatic or aromatic aldehydes. Benzoyl-substituted
开发了一种合成实用的过渡
金属/催化剂/无卤素的醛与N-羟基
酰亚胺的脱氢偶联,仅由
亚硝酸叔丁酯在温和条件下促进。叔丁基
亚硝酸盐产生两个自由基(t BuO 和 NO),因此可作为双重吸氢剂。从脂肪族或
芳香族醛制备了多种N-羟基
酰亚胺酯。苯甲酰基取代的醛如2-氧代-2-苯基
乙醛也是合适的。