Pd-catalyzed carbonylative access to aroyl phosphonates from (hetero)aryl bromides
作者:Zhong Lian、Hongfei Yin、Stig D. Friis、Troels Skrydstrup
DOI:10.1039/c5cc02085a
日期:——
This first carbonylative coupling employing a phosphorus-based nucleophile provides easy and safe access to acyl phosphonates under mild conditions.
这种首次使用磷基亲核试剂的羰基化偶联反应在温和条件下提供了对酰基膦酸酯的简便安全访问。
Carbene-catalyzed enal γ-carbon addition to α-ketophosphonates for enantioselective access to bioactive 2-pyranylphosphonates
作者:Jun Sun、Fangcheng He、Zhongyao Wang、Dingwu Pan、Pengcheng Zheng、Chengli Mou、Zhichao Jin、Yonggui Robin Chi
DOI:10.1039/c8cc03017k
日期:——
A carbene-catalyzed enantioselective [4+2] cycloaddition reaction between α,β-unsaturated aldehydes and α-ketophosphonates is developed. The reaction affords chiral 2-pyranylphosphonates with excellent enantioselectivities. The optically enriched phosphonate products bear multiple functional groups, including unsaturated lactone and phosphonate moieties that often lead to unique bio-activities. Preliminary
Synthesis of Acylphosphonates by a Palladium-Catalyzed Phosphonocarbonylation Reaction of Aryl Iodides with Phosphites
作者:Yusuke Masuda、Naoki Ishida、Masahiro Murakami
DOI:10.1002/asia.201403260
日期:2015.2
Acylphosphonates are conveniently synthesized from aryl iodides by a palladium‐catalyzed reaction with dialkyl phosphites under an atmosphericpressure of carbonmonoxide. The reaction demonstrates the first example of the use of phosphorus nucleophiles in related metal‐catalyzed carbonylation reactions.
1,3-Dipolar cycloaddition reactions of acyl phosphonates with nitrile oxides: synthesis of phosphonate-containing dioxazole derivatives
作者:Sidika Polat-Cakir
DOI:10.1080/10426507.2020.1854259
日期:2021.5.4
1,3-dipolar cycloadditionreactions of nitrileoxides used as dipole with acyl phosphonates under basic conditions. Herein, acyl phosphonates take part in the cyclization process as a dipolarophile to afford the related dioxazole compounds in moderate-to-good yields (49–84%). Substituted arylnitrileoxides and aroyl phosphonates were employed in the 1,3-dipolar cycloadditionreactions where triethylamine
摘要 新的含膦酸酯的五元杂环二恶唑衍生物是通过在碱性条件下用作偶极的腈氧化物与酰基膦酸酯的1,3-偶极环加成反应合成的。在此,酰基膦酸酯以双极性亲和性参与环化过程,以中等至良好的收率(49-84%)提供相关的二恶唑化合物。取代的芳基腈氧化物和芳酰基膦酸酯用于1,3-偶极环加成反应中,其中三乙胺是有效的叔碱。酰基膦酸酯的烷基形式也提供了预期的环加合物,即5-异丙基-3-苯基-3-苯基-1,4,2-二恶唑-5-基-5-膦酸二甲酯。二/二甲基3,5-芳基-1,4,2-二恶唑-5-基-5-膦酸酯衍生物充分特征在于,使用1 H NMR,13C NMR,31 P-NMR和FT以及高分辨率质谱。
Uncatalyzed Addition of TMSCN to Acylphosphonates
作者:Ayhan Demir、Ömer Reis、Metin Kayalar、Serkan Eymur、Barbaros Reis
DOI:10.1055/s-2006-951558
日期:——
The cyanosilylations of various alkyl- and arylphosphonates under comparatively mild conditions furnished the trimethylsilyloxycyanophosphonates in high yield. The addition to ketophosphonate functions works without the influence of a catalyst.