式R F CH 2 COCH 3(R F = n -C 3 F 7,n -C 4 F 9,n -C 6 F 13,n -C 8 F 17)的全氟烷基丙酮与氨以及伯和仲的相互作用胺已被研究。在所有情况下,亲核试剂都会先对起始的酮进行脱氟化氢,然后再用亲核试剂取代乙烯基氟原子,从而得到β-二羰基化合物R F C(NR 2)= CH-C(O)CH 3;它们的水解在温和条件下产生相应的β-二酮。全氟烷基丙酮与烷氧基钠反应,生成式R F C(OR)2 CH 2 COCH 3的化合物,其酸性水解作用还会生成β-二酮。
Fluorinated β‐Diketones for the Extraction of Lanthanide Ions: Photophysical Properties and Hydration Numbers of Their Eu
<sup>III</sup>
Complexes
作者:Anne‐Sophie Chauvin、Frédéric Gumy、Izuru Matsubayashi、Yuko Hasegawa、Jean‐Claude G. Bünzli
DOI:10.1002/ejic.200500849
日期:2006.1
ca. 1.3 units. Highly fluorinatedcomplexes (i.e with hexafluoroacetylacetonate and related ligands) display a hydration number close to one while poorly fluorinated compounds (or nonfluorinated ones, such as the acetylacetonate complex) have a hydration state close to two. Photophysicalproperties of the EuIII β-diketonates are also described and the synthesis of the fluorinated β-diketones is re-investigated
studied. An efficient and convenient synthetical approach to fluorinated pyrrolo[2,3-b]pyridines was developed. The tert-butyl protecting group was successfully removed by treating the pyrrolopyridines or -pyrimidines with 60% sulfuric acid and this was followed by direct glycosylation of the products. pyrrole - amine - fluorine - pyridine - annulation - electrophilic aromatic substitution
为了合成新型ADAs(腺苷脱氨酶)和IMPDH(肌苷5'-单磷酸脱氢酶)抑制剂,5-氨基-1-叔丁基-1- H-吡咯-3-腈与氟化的1,3-反应研究了双亲电子试剂。开发了一种高效简便的氟化吡咯并[2,3- b ]吡啶的合成方法。的叔通过处理吡咯并吡啶或-pyrimidines用60%硫酸成功删除丁基保护基团并且在这之后由产物直接糖基化。 吡咯-胺-氟-吡啶-环化-亲电取代
A Convenient Synthesis of Fluorinated
Pyrazolo[3,4-<i>b</i>]pyridine
and Pyrazolo[3,4-<i>d</i>]pyrimidine
Nucleosides
6-tris(trifluoromethyl)-1,3,5-triazine, a set of fluorinated pyrazolo[3,4-b]pyridine and pyrazolo[3,4-d]pyrimidine nucleosides was obtained. Synthetic access to stable 4-(polyfluoroalkyl)-4,7-dihydro-1H-pyrazolo[3,4-b]pyridin-4-ole was elaborated, which can be considered to be mimetics of the putative transition state involved in adenosine deaminase activity. pyrazole - pyridine - pyrimidine - fluorine
由5-氨基-1-(2,3-开始ö异亚丙基β- d呋喃核糖基)-1 ħ吡唑,1,3- CCC-,1,3- CNC含氟- dielectrophiles和2,4-获得了6-6-三(三氟甲基)-1,3,5-三嗪,一组氟化的吡唑并[3,4- b ]吡啶和吡唑并[3,4- d ]嘧啶核苷。合成了稳定的4-(多氟烷基)-4,7-二氢-1H-吡唑并[3,4- b ]吡啶-4-酮的合成途径,这可以被认为是腺苷涉及的假定过渡态的模拟物。脱氨酶活性。 吡唑-吡啶-嘧啶-氟-环化-亲电子芳族取代
A preparative approach towards 1-desazapurines, starting from 4(5)-aminoimidazoles and polyfluoroalkyl-containing 1,3-CCC-biselectrophiles was developed. As a result, a set of fluorinated 1-desazapurines was synthesized. Additionally, a synthetic route to 1-desazapurines bearing a sugar-mimicking group is proposed. imidazoles - pyridines - annulations - fluorine - diketones - regioselectivity
Fluorinated benzofuro[2,3-b]pyridines, benzothieno[2,3-b]pyridines and 9H-pyrido[2,3-b]indoles (α-carbolines) were synthesized via regiospecific pyridine core annulation of a number of fluoro-containing 1,3-CCC-dielectrophiles to benzofuran-2-amine, benzothiophen-2-amine and 1H-indol-2-amine. Based on the 2,4-bis(trifluoromethyl)-9H-pyrido[2,3-b]indole thus synthesized, the preparative approach towards a set of nucleosides and nucleoside mimetics bearing the α-carboline framework was elaborated.