Palladium(II)‐catalyzed ethoxycarbonylation of aryl bromides with diethyloxalate oxalate is described. Functionalized aromatic esters can be efficiently synthesized with only 0.65 mol % PdCl2(PPh3)2 catalyst under microwave irradiation and without additional ligand. This method illustrates an inexpensive and operationally simple method for the preparation of aromatic esters.
Efficient synthesis of anthranilic esters via Pd-catalyzed dehydrogenative/decarbonylative coupling of anilides and glyoxylates
作者:Sizhuo Wang、Zhiyong Yang、Jidan Liu、Kai Xie、Anwei Wang、Xiang Chen、Ze Tan
DOI:10.1039/c2cc34473d
日期:——
A novel way of synthesizing anthranilic esters was developed via Pd-catalyzed dehydrogenative/decarbonylative coupling between anilides and glyoxylates.
开发了一种通过Pd催化的脱氢/脱羟基耦合,将苯胺和乙醇酸酯合成邻氨基苯甲酸酯的新方法。
Reactivity of 2-Methyl-4<i>H</i>-3,1-benzoxazin-4-ones and 2-Methyl-4<i>H</i>-pyrido[2,3-<i>d</i>][1,3]oxazin-4-one under Microwave Irradiation Conditions
作者:Kyriakos C. Prousis、Andromachi Tzani、Nicolaos Avlonitis、Theodora Calogeropoulou、Anastasia Detsi
DOI:10.1002/jhet.1869
日期:2013.11
The reactivity of variably substituted 2‐methyl‐4H‐3,1‐benzoxazin‐4‐ones and 2‐methyl‐4H‐pyrido[2,3‐d][1,3]oxazin‐4‐one towards carbon and oxygen nucleophiles undermicrowaveirradiationconditions was investigated. Optimization of the reaction conditions of oxazinones with carbon nucleophiles led to the synthesis of a series of 4‐hydroxy‐quinolin‐2‐ones and 4‐hydroxy‐1,8‐naphthyridin‐2‐ones in high
可变取代的2-甲基-4 H -3,1-苯并恶嗪-4-酮和2-甲基-4 H吡啶并[2,3- d ] [1,3]恶嗪-4-酮对碳和氯的反应性研究了微波辐照条件下的氧亲核试剂。恶嗪酮与碳亲核试剂的反应条件的优化导致高产率合成了一系列4-羟基喹啉-2-酮和4-羟基-1,8-萘啶-2-酮,但反应多种多样多种醇顺利进行,形成了相应的N-乙酰基邻氨基苯甲酸酯和烟酸酯。
Synthesis of a Zeolitic Imidazolate–Zinc Metal–Organic Framework and the Combination of its Catalytic Properties with 2,2,2-Trifluoroethanol for N-Formylation
A novel protocol is reported for the N-formylation of amines with formic acid by using the nanoporous zeolitic imidazolate framework ZIF-8 as a heterogeneous catalyst in 2,2,2-trifluoroethanol.
Study of alkaloids of the Siberian and Altai flora 13. Synthesis of alkynyllappaconitines
作者:S. A. Osadchii、E. E. Shul’ts、S. F. Vasilevskii、E. V. Polukhina、A. A. Stepanov、G. A. Tolstikov
DOI:10.1007/s11172-007-0058-4
日期:2007.2
The Sonogashira coupling of 5′-iodolappaconitine with prop-2-yn-1-ol, 2-methylbut-3-yn-2-ol, phenylacetylene, and 5-ethynylpyrimidine gave new lappaconitine derivatives containing an alkynyl fragment.