学科分类
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12 个结果
  • 简介:PREPARATIONOFN--BUTYLOXYCARBONYL-O ̄α-9-FLUORENYLMETHYLESTEROFASPARTICACID¥ZongJinHAN;ZhenKaiDINGandQiKaiZHANG(BeijingInstitu...

  • 标签: ACID PREP
  • 简介:Theoptimalconditionsforthecomplexationreactionofmeso-tetra(3-methoxy-4-hy-droxyphenyl)porphineT(3-M-4HP)Pwithplatinumandrhodiumarepresented.Beer’sLawisobeyedwhentheconcentrationofrhodiumisintherangeof0.45-1.15μg/25mL.Themolarabsorptivityofrhodiumwasfoundtobe1.99×106L·mol-1·cm-1at460nm.ThevalueofεPtwasfoundtobe6.28×105L·mol-1·cm-1bylinearregressionmethod.TheKcoefficientmethodandcompensatingcoefficientwereusedtodetermineplatinumandrhodiumsimultaneoulywithoutremovalormaskingoftheinterferentsinthesample.Theresultsforthedeterminationofplatinumandrhodiuminthemixedsolutionofplatinumandrhodiumaresatisfactory.

  • 标签: PLATINUM RHODIUM Spectrophotonletry Meso-tetra(3-M-4HP)P.
  • 简介:乙醇2-的催化不对称的加氢的申请(benzo[b]thiophen-5-yl)为认知enhancerT-588的正式合成的-2-oxoacetate被描述。加氢作为添加剂与HCl在Ru-SunPhos系统的催化作用下面被进行。乙醇2-(benzo[b]thiophen-5-yl)-2-hydroxy-acetate与98.6%ee被获得,它能容易在简单再结晶以后被升级到99.5%ee并且在T-588的合成用作关键中介。

  • 标签: 不对称催化加氢 甲酸乙酯 噻吩 合成 不对称氢化
  • 简介:Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.

  • 标签: Carborane Halfsandwich IRON complex Chirality Molecular