Iridium(I) complexes having an imidazol-2-ylidene ligand with benzylic wingtips efficiently catalyzed the β-alkylation of secondary alcohols with primary alcohols and acceptorless dehydrogenative cyclization of 2-aminobenzyl alcohol with ketonesthrough a borrowinghydrogen pathway. The β-alkylated alcohols, including cholesterol derivatives, and substituted quinolines were obtained in good yields
Visible-light-induced metal-free trifluoromethylation of activated, carbocyclic, and unactivated vinylcyclopropanes via a ring-opening reaction using the Langlois reagent (CF3SO2Na) is reported to synthesize allylic trifluoromethylated derivatives. Allylic trifluoromethylation was achieved by a photo-oxidative single electron transfer (SET) process at an ambient temperature and under metal-free conditions
据报道,使用Langlois试剂(CF 3 SO 2 Na)通过开环反应,可见光诱导的活化,碳环和非活化乙烯基环丙烷的无金属三氟甲基化反应可合成烯丙基三氟甲基化衍生物。烯丙基三氟甲基化是通过在环境温度和无金属条件下通过光氧化单电子转移(SET)工艺以及使用吡喃鎓盐作为光氧化还原催化剂的可见光照射实现的。所报道的方法具有操作简单,基材范围广,官能团耐受性高和可扩展性的特点。
Direct synthesis of functionalized PCN-333 <i>via</i> linker design for Fe<sup>3+</sup> detection in aqueous media
作者:Yingmu Zhang、Xinyu Yang、Hong-Cai Zhou
DOI:10.1039/c8dt01508b
日期:——
Functionalized PCN-333 was synthesized for Fe3+ ion detection via one-pot solvothermal reaction.
通过一锅法溶剂热反应合成了功能化PCN-333,用于Fe3+离子检测。
Highly fluorescent aryl-cyclopentadienyl ligands and their tetra-nuclear mixed metallic potassium–dysprosium clusters
studied by theoretical calculations. Ligands 1 and 2 have been shown to react with anhydrous DyCl3 in the presence of potassium metal at high temperature to afford two fluorescent chloride-bridged tetra-nuclear mixed potassium–dysprosium metallocenes [(Me2Cp)4Dy2IIICl4K2]·3.5(C7H8) (5) and [(Me3Cp)4Dy2IIICl4K2]·3(C7H8) (6), respectively in good yields.
Carbon–Carbon Bond Cleavage Reaction: Synthesis of Multisubstituted Pyrazolo[1,5-<i>a</i>]pyrimidines
作者:Pallabi Saikia、Sanjib Gogoi、Romesh C Boruah
DOI:10.1021/acs.joc.5b00933
日期:2015.7.2
A newcarbon–carbonbond cleavage reaction was developed for the efficientsynthesis of multisubstituted pyrazolo[1,5-a]pyrimidines. This base induced reaction of 1,3,5-trisubstituted pentane-1,5-diones and substituted pyrazoles afforded good yields of the pyrazolo[1,5-a]pyrimidines.
为了有效合成多取代的吡唑并[1,5- a ]嘧啶,开发了一种新的碳-碳键裂解反应。该碱诱导的1,3,5-三取代戊烷-1,5-二酮与取代的吡唑的反应提供了吡唑并[1,5- a ]嘧啶的良好收率。