Direct incorporation of two carbonyl groups into a double bond by diacylation is achieved for the first time via visible-light catalysis. Key to success is that N(n-Bu)4+ not only associates with the alkyl anion to avoid protonation, but also activates the α-keto acid to undergo electrophilic addition. The metal-free, redox-neutral and regioselective symmetric and unsymmetric 1,2-dicarbonylation of
通过可见光催化,首次实现了通过二酰化将两个羰基直接结合到双键中。成功的关键是 N( n -Bu) 4 +不仅与烷基阴离子缔合以避免质子化,而且还激活α-
酮酸进行亲电加成。烯烃的无
金属、氧化还原中性和区域选择性对称和不对称 1,2-二羰基化具有许多应用的潜力。