available ketones. Mechanistic studies suggest that this Rh-catalyzed deoxygenative borylation of ketones goes through an alkene intermediate, which undergoes regiodivergent hydroboration to afford linear and branched alkylboronates. The different steric effects of PPh2Me and P(nBu)3 were found to be responsible for product selectivity by density functional theory calculations. The alkene intermediate
在这里,我们报告了一种有效的铑催化酮脱氧硼酸化合成烷基硼酸酯,其中区域选择性可以通过选择配体来切换。直链烷基硼酸酯仅在 P( n Bu) 3存在下获得,PPh 2 Me 有利于支链烷基硼酸酯的形成。该协议还允许从现成的酮中获取 1,1,2-三硼酸酯。机理研究表明,这种 Rh 催化的酮类脱氧硼酸化反应经过烯烃中间体,该中间体经历区域发散硼氢化反应,得到直链和支链烷基硼酸酯。PPh 2 Me 和 P( n Bu) 3的不同空间位阻效应通过密度泛函理论计算发现是产物选择性的原因。烯烃中间体也可以依次进行脱氢硼酸化和硼氢化反应以提供三硼酸酯。
[EN] COMPOUNDS FOR IMPROVING MRNA SPLICING<br/>[FR] COMPOSÉS POUR AMÉLIORER L'ÉPISSAGE DE L'ARNM
申请人:GEN HOSPITAL CORP
公开号:WO2016115434A1
公开(公告)日:2016-07-21
Provided herein are compounds useful for improving mRNA splicing in a cell. Exemplary compounds provided herein are useful for improving mRNA splicing in genes comprising at least one exon ending in the nucleotide sequence CAA. Methods for preparing the compounds and methods of treating diseases of the central nervous system are also provided.
Iron(iii)-based ionic liquid-catalyzed regioselective benzylation of arenes and heteroarenes
作者:Jian Gao、Jin-Quan Wang、Qing-Wen Song、Liang-Nian He
DOI:10.1039/c1gc15056a
日期:——
Lewis acid ionic liquid ([C4mim][FeCl4]), being comprised of 1-butyl-3-methyl imidazolium cation and tetrachloroferrate anion, was found to be an efficient, recyclable catalyst for benzylation of various arenes/heteroarenes into the diarylmethanes derivatives under mild reaction conditions without utilization of additional organic solvent. Interestingly, the acidity of [C4mim][FeCl4] could account for
Tandem arylation-reduction of acyl heterocycles. Convenient synthesis of benzyl heterocycles
作者:Stan S. Hall、Sami E. Farahat
DOI:10.1002/jhet.5570240453
日期:1987.7
arylation-reduction of a series of acyl heterocycles using phenyl-, 4-methylphenyl-, and 4-methoxy-phenyllithium reagents followed by lithium-ammonia-ammonium chloride reduction afforded the corresponding benzyl heterocycles. The acyl heterocycles surveyed in this study contained furan, 2,3-dihydro-4H-1-benzopyran, 4H-1-benzopyran, thiophene, 4,5,6,7-tetrahydrobenzo[b]thiophene, 2,3-dihydro-4H-1-benzothiopyran
使用苯基-,4-甲基苯基-和4-甲氧基-苯基锂试剂将一系列酰基杂环进行串联芳基化还原,然后将锂-氨-氯化铵还原,得到相应的苄基杂环。在这项研究中调查的酰基杂环化合物包括呋喃,2,3-二氢-4 H -1-苯并吡喃,4 H -1-苯并吡喃,噻吩,4,5,6,7-四氢苯并[ b ]噻吩,2,3-二氢-4 H -1-苯并噻喃和吡啶核。除了2,3-二氢-4 H -1-苯并噻吩并-4-酮外,所有酰基杂环均产生相应的苄基杂环,其在还原过程中选择性裂解,得到相应的2-(1-芳基丙基)苯硫醇。
Nickel(0)-Catalyzed Hydroarylation of Styrenes and 1,3-Dienes with Organoboron Compounds
Ni‐catalyzed hydroarylation of styrenes and 1,3‐dienes with organoboron compounds has been developed. The reaction offers a highly selective approach to diarylalkanes and allylarenes under redox‐neutral conditions. In this hydroarylation reaction, a new strategy that uses the proton of methanol to generate the active catalyst species Ni−H was developed. The Ni‐catalyzed hydroarylation, combined with