8.(江苏省化学竞赛选拔赛试题)酯交换反应是合成酯的重要方法之一。化合物A是合成四环素的一个重要中间体。 它的合成路线如下:CO CH NaOH(n-C4H9)4N OH BC CO2CH3CO2CH3OCH,CO2CH3O OO CO3CH31)H/H2O2)CH3OH,H CH3CO2H OCH_3CO_2CH_3 OCH3 CO2CH3D A根据上述合成路线,请回答:(1)分别写出化合物 ...
The reaction of [(n-C4H9)4N]4[Mo8O26] with 2-(hydroxymethyl)-2-methyl-l,3-propanediol (H3hmmp) in acetonitrile yields (TBA)2[Mo3O7(hmmp)2] (1). Complex 1 reacts with chloroacetic acid and alkylating agents to yield the derivatives (TBA)[Mo3O6(OH)(hmmp)2] (2) and (TBA)[...
Coordination Chemistry of Polyoxomolybdates: The Structure of a Dodecanuclear Molybdate Cage Incorporating Hydrogen Squarate Ligands, [(C4H9)4N]4 [Mo12O36(... The coordination compounds of silver(I) halides or nitrate with tetramethylthiuram monosulfide (Me4TMS) have been prepared. Their IR ...
例如,很出名的麻醉药东莨菪碱,是由植物曼陀丹中分离出来的一种生物碱,早在1892年就分离得到,并且确定其分子式为C17H21O4N.但它的结构式直到1951年才肯定下来.按照现在水平来看,这个结构并不太复杂.近年来,应用现代物理方法如X衍射、各种光谱法、核磁共振谱和质谱等,能够准确、迅速地确定有机化合物的结构,大大...
Crystal structures of tetrabutylammonium bis(phthalocyaninato)terbium(III) methanol solvate hydrate (1:1: 3/2), [N(C4H9)4][Tb(C8H4N2)2]·CH3OH· 3/2 H2O, and tetrabutylammonium bis(phthalocyaninato)dysprosium(III) methanol solvate hydrate (1:1:1), [N(C4H9)4][Dy(C8H4N2)2]·CH3OH...
Lipkowski J, Komarov VY, Rodionova TV, Aladko LS. X-ray investigation of compounds crystallized in aqueous solution of tetrabutylammonium laurate. The structure of (C4H9)4N(C11H23COO)$3C11H23COOH$4H2O. Journal of Structural Chemistry 2005;46:S51e7....
( nC 5H 11) 4N + ions, the earlier described almost planar 14-membered ring system [{(Me 3Sn) 2OH} 2{Ni(CN) 4} 2] 2− polymerizes via O–H⋯NC hydrogen bonds to straight, infinite ribbons, while in the presence of the slightly smaller ( nC 4H 9) 4N + ion a faintly ...