Studies on Fungicides. XXV. Addition Reaction of Dithiocarbamates to Fumaronitrile, Bis (alkylthio) maleonitrile, 2, 3-Dicyano-5, 6-dihydro-1, 4-dithiin and 4, 5-Dicyano-2-oxo-1, 4-dithiole
摘要:
5-氰甲基-2-硫酮-4-氨基硫氮茂 (II) 可用富马睛与二硫代氨基甲酸盐的加成反应来制备。用二硫代氨基甲酸盐与双 (甲硫基) 马来睛 (IXa),双 (苄硫基) 马来睛 (IXb),2,3-二氰基-5,6-二氢-1,4-二硫茂 (IXc)及4,5-二氰基-2-氧-1,4-二硫茂 (IXd) 反应,制得了 5,5'-双-2-硫酮-4-氨基硫氮茂 (X)。发现 II 及 X 的 4-氨基对酸不稳定,与无机酸加热时,即水解而得 5-氰甲基-2-硫酮-4-硫氮杂茂酮 (III) 及 5,5'-双-2-硫酮-4-硫氮杂茂酮 (XII)。发现 X 于催化量的三乙胺存在时可自动氧化成 Δ 5,5'-双-2-硫酮-4-亚氨基硫氮茂 (XI)。由 N-苄基二硫代氨基甲酸盐与5-亚氰甲基-2-硫酮-4-硫氮杂茂酮 (XIV) 的加成反应制得了 4-氧-4,亚氨基-Δ5,5'-双-2-硫酮-硫氮杂茂酮 (XVI)。用无机酸水解 XI 及 XIV,制得了 Δ5,5'-双-2-硫酮-4-硫氮杂茂酮 (XIII)。
for the first time by treatment with metal salts, hexamethyldisilazane (HMDS) and p-toluene sulfonic acid (PTSA) in DMF at 120 °C. This reaction provides a new preparative method undermildconditions for direct synthesis of metalloporphyrazines having a variety of metals and substituted maleonitriles.
通过在 120 °C 的 DMF 中用金属盐、六甲基二硅氮烷 (HMDS) 和对甲苯磺酸 (PTSA) 处理,首次实现了从马来腈中制备游离碱和金属四氮杂卟啉的新型单步法。该反应为在温和条件下直接合成具有多种金属和取代马来腈的金属卟啉提供了一种新的制备方法。
Unsymmetrical Pentoxy-Substituted Porphyrazines
作者:I. Yu. Nikolaev、E. V. Kudrik、V. P. Kulinich、G. P. Shaposhnikov
DOI:10.1007/s11176-005-0251-9
日期:2005.3
The reactions of 3,6-dipentoxyphthalonitrile (A) in the 1-pentanol - magnesium pentylate medium with phthalonitrile, 2,3-di(methylsulfanyl)-2-butenedinitrile, and 2,3-dihydro-1,4-dithiin-5,6-dicarbonitrile (B) were performed. Unsymmetrically substituted porphyrazines A3B were prepared and studied. The influence of the structure of fragment B on the spectral characteristics of the porphyrazines was examined.
在 1-戊醇-戊酸镁介质中,3,6-二戊氧基邻苯二甲腈(A)与邻苯二甲腈、2,3-二(甲硫基)-2-丁烯二腈和 2,3-二氢-1,4-二硫杂-5,6-二甲腈(B)发生了反应。制备并研究了不对称取代的卟吩嗪 A3B。研究了片段 B 的结构对卟吩嗪类化合物光谱特性的影响。
The reaction of alkyl halides with the bis(1,2-dicyanoethylenedithiolato)lead(II) ion
Abstract The reaction of the bis(1,2-dicyanoethylenedithiolato)lead(II) ion, Pb(mnt) 2 − 2 , with various organohalides has been examined and found to yield the halo(1,2-dicyanoethylenedithiolato)lead(II) ion Pb(mnt)X − (X = Br, I) and the 1,2-di(alkylmercapto) 1,2-dicyanoethylene, R 2 mnt (R = 1°, 2° alkyl). Qualitative rate studies have shown that the alkylation proceeds much faster for Pb(mnt) −
Baehr; Schleitzer, Chemische Berichte, 1957, vol. 90, p. 438,443
作者:Baehr、Schleitzer
DOI:——
日期:——
Surface-Bound Porphyrazines: Controlling Reduction Potentials of Self-Assembled Monolayers through Molecular Proximity/Orientation to a Metal Surface
作者:Benjamin J. Vesper、Khalid Salaita、Hong Zong、Chad A. Mirkin、Anthony G. M. Barrett、Brian M. Hoffman
DOI:10.1021/ja045270m
日期:2004.12.1
We report the preparation of two novel H-2[pz(A(n);B4-n)] porphyrazines (pzs) which were designed to position themselves quite differently when attached to a surface: one to form a standard self-assembled monolayer (SAM) roughly perpendicular to a surface, the other to lie horizontally along a surface. As the former, we synthesized a pz, 1, where one pyrrole group is functionalized with two thioethers terminated in mercaptides (SR, R = (CH2)(3)CONH(CH2)(2)S-), each protected as a disulfide, and -S-Me is attached to the other pyrrole sites; the latter is a pz, 2, with dialkoxybenzo groups fused to two trans-pyrroles of the pz ring, and SR groups are attached to the other pair of pyrroles. Nanostructures of 1 and 2 were successfully patterned on gold surfaces via dip-pen nanolithography, and the predicted molecular orientation of the resulting structures was confirmed by topographic AFM images. The two pzs exhibit similar reduction potentials in solution. Both show large shifts in potential upon surface binding, with the magnitude of the shift depending on the proximity/orientation of the pz to the surface. The first reduction potential of the "vertically" aligned 1 shifts by ca. +430 mV when incorporated in a binary pz/hexanethiol SAM, while that for 2, which lies flat, shifts by ca. +800 mV; the potential thus shifts by ca. +370 mV upon taking a given pz that stands atop a two-legged insulating "standoff" in a traditional SAM and "laying it down". We suggest these observed effects can be explained by image-charge energetics, and this is supported by a simple model.