Palladium-Catalyzed CC Bond Formation To Construct 1,4-Diketones under Mild Conditions
作者:Chao Liu、Yi Deng、Jing Wang、Yingying Yang、Shan Tang、Aiwen Lei
DOI:10.1002/anie.201101638
日期:2011.8.1
palladium‐catalyzed reaction between the bulky α‐carbon centers of two ketones has led to the construction of 2,3‐diaryl‐1,4‐diketones by employing α‐chloroketones as electrophiles and zinc ketone enolates as nucleophiles (see scheme). This reaction allows the synthesis of bulky 1,4‐diketones and is complementary with classic nucleophilic substitution reactions.
Na2S-Mediated One-Pot Selective Deoxygenation of α-Hydroxyl Carbonyl Compounds including Natural Products
作者:Xiaobo Xu、Leyu Yan、Zhi-Kai Zhang、Bingqing Lu、Zhuangwen Guo、Mengyue Chen、Zhong-Yan Cao
DOI:10.3390/molecules27154675
日期:——
A practical method for the deoxygenation of α-hydroxyl carbonylcompounds under mild reaction conditions is reported here. The use of cheap and easy-to-handle Na2S·9H2O as the reductant in the presence of PPh3 and N-chlorosuccinimide (NCS) enables the selective dehydroxylation of α-hydroxyl carbonylcompounds, including ketones, esters, amides, imides and nitrile groups. The synthetic utility is demonstrated
本文报道了一种在温和反应条件下使 α-羟基羰基化合物脱氧的实用方法。在 PPh 3和N-氯代琥珀酰亚胺 (NCS) 存在下,使用廉价且易于处理的 Na 2 S·9H 2 O 作为还原剂,可以对 α-羟基羰基化合物(包括酮、酯、酰胺)进行选择性脱羟基、酰亚胺和腈基团。合成效用通过生物活性分子和复杂天然产物的后期脱氧来证明。