高安定性リン複素環一重項ビラジカルおよび関連分子系の合成と性質

DOI Web Site 被引用文献1件 参考文献102件
  • 伊藤 繁和
    東京工業大学大学院理工学研究科応用化学専攻

書誌事項

タイトル別名
  • Synthesis and Properties of Highly Stable P-Heterocyclic Singlet Biradicals and Related Compounds
  • コウアンテイセイ リンフクソカン イチジュウコウ ビラジカル オヨビ カンレン ブンシケイ ノ ゴウセイ ト セイシツ

この論文をさがす

抄録

Whereas biradicals are generally observed only under cryogenic inert conditions, highly stabilized 1,3-diphosphacyclobutane-2,4-diyls, phosphorus congeners of cyclobutane-1,3-diyl, can be stored at room temperature and even in air. We succeeded in establishing a promising synthetic protocol for the extremely stable biradicals by utilizing a bulky phosphaalkyne Mes*C≡P(Mes*=2,4,6-tri-t-butylphenyl). The singlet ground state biradicals were characterized by spectroscopies including NMR, and the X-ray structural parameters indicated effects of the phosphorus atoms and sterically encumbered aryl substituents. Conversion into the cyclic phosphorane and thermal ring-expansion were facilitated by the presence of amino- and acyl substituents, respectively. Dual hydrogen loadings on the biradical skeleton were accomplished to afford cyclobutadiene-like P-heterocycles. Most of the air-stable P-heterocyclic biradicals showed high electron-donating properties, and catenation of two or three biradical units induced unique intramolecular through-space interactions between the biradical chromophores. Stable P-heterocyclic neutral monoradical was successfully obtained by utilizing the biradical synthetic procedures.

収録刊行物

被引用文献 (1)*注記

もっと見る

参考文献 (102)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ