Double-Stranded Metal−Organic Networks for One-Dimensional Mixed Valence Coordination Polymers
作者:Daniel Robertson、John F. Cannon、Nikolay Gerasimchuk
DOI:10.1021/ic050465w
日期:2005.11.1
solvents. Nine thallium(I) cyanoximates were obtained using the reaction between hot (approximately 95 degrees C) aqueous solutions of Tl2CO3 and solid powdery monohalogenated arylcyanoximes HL. Crystalstructures of two Tl(I) cyanoximates [Tl(2Cl-PhCO) and Tl(4Br-PhCO)] contained centrosymmetric dimeric units (TlL)2 that are connected to a coordination polymer by means of an oxygen atom of the oxime
Disclosed are novel high-sensitivity positive- and negative-working chemical-sensitization photoresist compositions capable of giving a highly heat-resistant patterned resist layer of high resolution having excellently orthogonal cross sectional profile without being influenced by standing waves. The composition contains, as an acid generating agent by irradiation with actinic rays, a specific cyano-substituted oximesulfonate compound such as .alpha.-(methylsulfonyloxyimino)-4-methoxybenzyl cyanide. The advantages obtained by the use of this specific acid-generating agent is remarkable when the film-forming resinous ingredient has such a molecular weight distribution that the ratio of the weight-average molecular weight to the number-average molecular weight does not exceed 3.5.
Copper-mediated synthesis of fullerooxazoles from [60]fullerene and <i>N</i>-hydroxybenzimidoyl cyanides
作者:Qing-Song Liu、Wen-Jie Qiu、Wen-Qiang Lu、Guan-Wu Wang
DOI:10.1039/d2ob00239f
日期:——
efficient copper-mediated [3 + 2] heteroannulation reaction of [60]fullerene with N-hydroxybenzimidoyl cyanides has been developed for the synthesis of fullerooxazoles. A possible reaction mechanism involving unique C–CN and N–OH bond cleavages and subsequent C–OH bond formation for N-hydroxybenzimidoyl cyanides is proposed to explain the generation of fullerooxazoles. In addition, the formed fullerooxazoles
A Cu-mediated stereoselective [4+2] annulation between N-hydroxybenzimidoyl cyanides and norbornene (NBE) has been developed for the synthesis of 4H-1,2-oxazin-4-ones. The reaction proceeds through sequentially forming C-O/C-C bonds. The advantage of this reaction includes high stereo selectivity, excellent yields, as well as simple and mild reaction conditions. A total of 26 examples are presented along with some control experiments.