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41.
Amaresh RR Lakshmikantham MV Baldwin JW Cava MP Metzger RM Rogers RD 《The Journal of organic chemistry》2002,67(8):2453-2458
3,4-Cyanomethyl substituted thiophenes reacted with thionyl chloride in the presence of base to give dicyano substituted thieno(3,4-c)thiophenes. The use of selenium oxychloride furnished the corresponding cyano substituted seleno(3,4-c)thiophene. 1,2-Phenylenediacetonitriles gave the corresponding cyano substituted benzo(c)thiophenes and benzo(c)selenenophenes, respectively, upon reaction with thionyl chloride and selenium oxychloride in the presence of base. 相似文献
42.
The in situ isomerisation and Diels-Alder reaction with 2-acetoxyacrylonitrile, of 2,5-dihydroanisole, leads to the adducts (1) which may be used as starting point for the synthesis of a number of bicyclo [2,2,2] octenones, bicyclo [3,2,1] octenones and bicyclo [3,2,2] nonenones. Under similar conditions, 2,5-dihydrotoluene reacts via an ene-reaction to produce, after hydrolysis, the acetylcyclohexadiene (27). The base-catalysed equilibration and subsequent Diels-Alder reactions of 2,5-dihydrotoluene have been investigated. 相似文献
43.
John A. Rogers Zhenan Bao 《Journal of polymer science. Part A, Polymer chemistry》2002,40(20):3327-3334
Plastic electronic materials and high‐resolution printing methods may be important technologies for new classes of consumer electronic devices that are lightweight, mechanically flexible and bendable, and that can cover large areas at low cost. This article summarizes some of our recent work in this area. It focuses on the materials and patterning techniques that we used to produce plastic active‐matrix backplane circuits for a type of paperlike display. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 3327–3334, 2002 相似文献
44.
A series of new RhIII complexes with N-substituted salicylaldimines have been prepared of the form [RhSBPy2]PF6 where SB is a tetradentate N,N′-substituted bis(salicylaldimine) or represents two molecules of a corresponding bidentate derivative. Several of these complexes have been reduced with 0.5% sodium amalgam and the products reacted with CH3I to yield the organometallic derivatives CH3RhSBPy. 相似文献
45.
We have detected large deviations of the MJ = 0, J = 2 ← 1 Stark effect transition in the linear molecule HCN?HF from predictions of second-, and even fourth-, order perturbation theory. In order to account satisfactorily for the observed effect it has been necessary to set up and diagonalize the appropriate energy matrix. Smaller deviations in the case of MJ = 1, J = 2 ← 1 have likewise been treated. The values of the electric dipole moment for HCN?HF calculated from these transitions, which show large and small deviations from second-order theory, and from one (MJ = 3, J = 4 ← 3) which shows effectively zero deviation, are now consistent and are as follows:
μ/D | |||
2 ← 1 | 0 | 5.627 | |
1 | 5.601 | ||
4 ← 3 | 3 | 5.608 | |
Mean | 5.612 |