尽管水是一种广泛使用、无毒且安全的溶剂,但由于许多催化剂、反应物和产物不溶于水,水在有机合成中的应用仍然是一个持续的挑战。在这项研究中,报道了一种三苯胺改性的氰基亚苯基亚乙烯基衍生物(TPCI),它具有优异的水溶性以及在水中产生单线态氧(1 O 2)的显着选择性和效率,使其非常适合用作光催化反应的高效光敏剂氢化氮杂苯、烯烃和氢硅烷的合成,得到偶氮芳香族化合物、羰基化合物和硅烷醇的功能有机分子,在蓝光照射下具有良好的官能团耐受性和广泛的底物范围。本研究介绍了一种新型II型光敏剂,该光敏剂能够利用可见光在水中高效地进行光催化氧化来合成功能性有机分子。
Pyridazinedione derivatives useful in treatment of neurological disorders
申请人:Imperial Chemical Company
公开号:US05652239A1
公开(公告)日:1997-07-29
The present invention relates to pyridazino[4,5-b]indoles, and pharmaceutically useful salts thereof, which are excitatory amino acid antagonists and which are useful when such antagonism is desired such as in the treatment of neurological disorders. The invention further provides pharmaceutical compositions containing pyridazino[4,5-b]indoles as active ingredient, and methods for the treatment of neurological disorders.
A number of chloro-, methyl- and methoxy-substituted azobenzenes have been reduced to the corresponding hydrazines by using an aqueous solution of Na2S2O4. The yield is generally excellent, but two compounds, viz. 4,4-dimethoxyazobenzene and 2,2,4,4,6,6-hexamethylazobenzene, gave no hydrazine at all.
hydrazoarenes using ethanol as a hydrogen source by a bidentate Ru(II)-NC complex is developed. A weak base is crucial for this semihydrogenation that can efficiently avoid hydrazoarene dehydrogenation under strongly basic conditions. Control experiments and density functional theory calculations demonstrate the mechanism via a Meerwein–Ponndorf–Verley mechanism, and the only byproduct is ethylacetate. This study
Pyridazinedione derivatives, their preparation and pharmaceutical applications
申请人:ZENECA LIMITED
公开号:EP0512817A1
公开(公告)日:1992-11-11
The present invention relates to pyridazino[4,5-b]indoles,
and pharmaceutically useful salts thereof, which are excitatory amino acid antagonists and which are useful when such antagonism is desired such as in the treatment of neurological disorders. The invention further provides pharmaceutical compositions containing pyridazino[4,5-b]indoles as active ingredient, and methods for the treatment of neurological disorders.