开发了在亚磷酸二乙酯存在下吡啶鎓盐和三甲基硅烷基氰化物 (TMSCN) 的铜催化反应。该反应首次实现了从容易获得的起始材料一步构建生物学上重要的2-氰基咪唑并[1,2- a ]吡啶的反应,并且在克级是可行的。该协议的范围通过 27 个示例进行了演示。在这一一锅法中可以实现连续的双氰化和环化。TMSCN 发挥双重作用,不仅作为“CN”源,而且作为咪唑并[1,2- a ]吡啶环化的偶联伙伴。
Iodine-Mediated Heterocyclization for the Synthesis of 6-Alkylthio-1,3,5-triazine-2,4-diamines from <i>N</i>-Alkylpyridinium Salts and NH<sub>4</sub>SCN
作者:Zhiqi Liu、Yinghua Li、Weibin Fan、Deguang Huang
DOI:10.1021/acs.joc.3c02517
日期:2024.1.5
An iodine-mediated method for the synthesis of 6-alkylthio-1,3,5-triazine-2,4-diamines by the reaction of N-alkylpyridinium salts and NH4SCN in air is reported. Twenty-seven compounds were obtained under the standard conditions. Pyridinium salts work as benzyl-group transfer reagents to promote the formation of the CBn–SSCN bond and thereby the construction of the triazine skeleton. A plausible mechanism
报道了一种通过N-烷基吡啶鎓盐与NH 4 SCN在空气中反应合成6-烷硫基-1,3,5-三嗪-2,4-二胺的碘介导方法。在标准条件下获得了27种化合物。吡啶盐作为苄基转移试剂,促进 C Bn –S SCN键的形成,从而构建三嗪骨架。根据实验结果和文献调查,提出了一种合理的机制。
Shpan'ko, I. V.; Korostylev, A. P.; Rusu, L. N., Journal of Organic Chemistry USSR (English Translation), 1984, vol. 20, p. 1715 - 1723
作者:Shpan'ko, I. V.、Korostylev, A. P.、Rusu, L. N.
DOI:——
日期:——
Complicated magnetic behavior in one-dimensional nickel(III) chain complex [1-(4′-cyanobenzyl)pyridinium][Ni(mnt)2](mnt2−=maleonitriledithiolate)
作者:Jingli Xie、Xiaoming Ren、Cheng He、You Song、Qingjin Meng、R.K. Kremer、Yuangen Yao
DOI:10.1016/s0009-2614(02)01953-x
日期:2003.2
A new ion-pair complex [1-(4'-cyanobenzyl)pyridinium] [Ni(mnt)(2)] (1), in which mnt(2-) = maleonitriledithiolate, have been fabricated and its X-ray single crystal structural analyses at 293, 180 and 140 K shown that the [Ni(mnt)(2)](-) anions and [CNBzPy](+) cations form a well-separated stacking column along c-axis direction, within which [Ni(mnt)(2)](-) anions are uniformly spaced to give a one-dimensional (I-D) chain structure. Bulk magnetic properties of this complex have been investigated in the temperature range of 2-400 K and shown there exists spin kink at similar to190 K. In low temperature region, weak ferromagnetic behavior occurs in 1. (C) 2003 Elsevier Science B.V. All rights reserved.
Kroehnke; Vogt, Chemische Berichte, 1952, vol. 85, p. 368,371