Aromaticazides are inert toward triethylsilane under thermal conditions in the presence of a radical initiator, but in the presence of additional catalytic amounts of tert-dodecanethiol, they afford anilinosilanes and thence the corresponding anilines in virtually quantitative yields.
One-pot Sequence for the Decarboxylation of α-Amino Acids
作者:Bernard T. Golding、Gilles Laval
DOI:10.1055/s-2003-37512
日期:——
Treatment of an α-amino acid with N-bromosuccinimide in water at pH 5 or in an alcoholic-aqueous ammonium chloride mixture, followed by addition of nickel(II) chloride and sodium borohydride, effected an overall decarboxylation via an intermediate nitrile to afford the corresponding amine in good yield.
New immonium trifluoroacetates 1 and 2 react readily with functionalized organozinc or magnesium reagents leading to the corresponding aminomethylated products of type 5 and 7. The resulting bis-allylamines were deallylated leading to primary amines.
Poly(diiododiacetylene): Preparation, Isolation, and Full Characterization of a Very Simple Poly(diacetylene)
作者:Liang Luo、Christopher Wilhelm、Aiwu Sun、Clare P. Grey、Joseph W. Lauher、Nancy S. Goroff
DOI:10.1021/ja8011403
日期:2008.6.18
characterization of the polymer by X-ray diffraction, solid-state (13)C MAS NMR, Raman, and electron absorption spectroscopy. Comparison of a series of hosts reveals an odd-even effect in the topochemical polymerization, based on the alkyl chain length of the host. In the cocrystals formed with bis(pentanenitrile) oxalamide (4) and bis(heptanenitrile) oxalamide (6), the host/guest ratio is 1:2 and the monomer
聚(二二乙炔)或 PIDA 是一种共轭聚合物,含有聚(二乙炔)(PDA)主链,但只有碘原子取代基。单体二碘丁二炔 (1) 可以通过草酰胺基团之间的氢键和腈与碘炔之间的弱路易斯酸碱相互作用(卤素键)与双(腈)草酰胺主体在固态下对齐。所得共晶开始时呈淡蓝色,但随着聚合的进行,会变成有光泽的铜色。结晶方法的开发将 PIDA 的产率大大提高到约 50%,现在可以通过 X 射线衍射、固态 (13) C MAS NMR、拉曼和电子吸收光谱对聚合物进行全面表征。一系列主体的比较揭示了拓扑化学聚合中的奇偶效应,基于主体的烷基链长度。在与双(戊腈)草酰胺(4)和双(庚腈)草酰胺(6)形成的共晶中,主客体比为1:2,单体在室温下自发聚合,而在双(丁腈)的情况下草酰胺(3)和双(己腈)草酰胺(5),其中主体和客体以1:1的比例形成共晶,聚合是不利的并且不能完成。在微米大小的 6.1 共晶的水悬浮液中也可以观察到
Purine derivatives as competitive inhibitors of human erythrocyte membrane phosphatidylinositol 4-kinase
作者:Rodney C. Young、Martin Jones、Kevin J. Milliner、Kishore K. Rana、John G. Ward
DOI:10.1021/jm00170a005
日期:1990.8
The possibility of deriving a potent, cell-penetrating inhibitor of humanerythrocyte PI 4-kinase, competitive with respect to ATP, has been investigated in a series of purine derivatives and analogues. The purine nucleus is not essential for binding to the ATP site but offers the advantage of synthetic accessibility to its derivatives. The optimum substitution pattern in purine was found to be an