highly effective C−O coupling reaction of (hetero)aryl electrophiles with primary and secondary alcohols is reported. Catalyzed by a NiII‐arylcomplex under long‐wave UV (390–395 nm) irradiation in the presence of a soluble amine base without any additional photosensitizer, the reaction enables the etherification of aryl bromides and arylchlorides as well as sulfonates with a wide range of primary
据报道,(杂)芳基亲电试剂与伯醇和仲醇的高效C-O偶联反应。在可溶性胺碱的存在下,在没有任何其他光敏剂的情况下,在长波紫外线(390–395 nm)辐射下,由Ni II-芳基络合物催化,该反应可以使芳基溴化物和芳基氯化物以及磺酸盐与多种伯和仲脂族醇,可提供合成上重要的醚。分子内CO偶联也是可能的。该反应似乎通过Ni I -Ni III催化循环进行。
SUBSTITUTED TRIAZOLO-PYRIMIDINE COMPOUNDS FOR MODULATING CELL PROLIFERATION, DIFFERENTIATION AND SURVIVAL
申请人:STATegics, Inc.
公开号:US20140142122A1
公开(公告)日:2014-05-22
Disclosed herein are erythropoietin-mimetic compounds of Formula I, which modulate the survival, function, or differentiation of, for example, kidney cells, neurons, erythroid cells, or other erythropoietin-responsive cells. The present invention also relates to compounds and methods that preferentially modulate cells expressing the tissue-protective erythropoietin receptor. The compounds of the invention are useful in preventing and treating diseases, such as anemia, organ injury, and diseases of the central nervous system, and as an adjunct to cellular treatments, such as stem cell therapies.
Moist kaolin catalyses the regioselective and high-yielding chlorination and bromination of C6H5OR (R=C1–C8 alkyl, But, allyl, cyclohexyl, benzyl) to 4-XC6H4OR (X=Cl and Br, respectively) with NaClO2 and Mn(acac)3 in CH2Cl2 in the absence and presence of NaBr, respectively, under mild and neutral conditions.
The present invention is directed to arginase inhibitor compounds of formula IA or formula IB:
or a pharmaceutically acceptable salt thereof, compositions containing these compounds, and methods of their use for the treatment and diagnosis of conditions characterized by upregulation of arginase, abnormally high arginase activity, or by abnormally low nitric oxide synthase activity.
Process for the production of styrene compound, and styrene compound free from biphenyl
申请人:Tosoh Corporation
公开号:US20020026084A1
公开(公告)日:2002-02-28
A process for the production of a styrene compound is provided. The process comprises reacting a Grignard reagent prepared from a tertiary butoxyphenyl halide with a vinyl halide in the presence of a catalyst, wherein the catalyst is at least one member selected from the group consisting of manganese catalyst, iron catalyst, cobalt catalyst and rhodium catalyst. The process overcomes the problems involved in the prior art, and is economical and safe. The styrene compound by the process is free from biphenyl.