An environmentally friendly and efficient method was developed for one-pot synthesis of a series of 2H-phenanthro[9,10-c]pyrazoles in EtOH by two dehydration processes. Firstly, 3,4-diaryl-1H-pyrazoles were synthesized by the cyclocondensation of isoflavones and hydrazine hydrate in refluxing EtOH. Secondly, the final target products 2H-phenanthro[9,10-c]pyrazoles were given by photocyclization and dehydration of 3,4-diaryl-1H-pyrazoles in 1 : 1 (v/v) EtOH-H 2 O. The advantages of this method are catalyst-free, short synthetic routes, mild reaction conditions and easy work-up. In addition, the fluorescence properties of 2H-phenanthro[9,10-c]pyrazoles were determined. Scheme 1 The retrosynthetic analysis of 2H-phenanthro[9,10-c]pyrazoles. † Electronic supplementary information (ESI) available: 1 H NMR, 13 C NMR and HRMS spectra for all compounds.
Revenue distribution is an important issue in the operations of a logistics service supply chain (LSSC). The existing works on revenue distribution are mostly based on the assumption of rational economic people that are purely self-interested. However, people also have a fairness preference, which impacts people’s decision-making behavior or even the success operations of the LSSC. For a two-level supply chain consisting of logistics service integrator (LSI) and several functional logistics service providers (FLSP), this paper establishes an improved revenue distribution model considering FLSPs’ inequity aversion. Specifically, the BO model (abbreviation of a model proposed by Bolton and Ockenfels in 2000) is improved to describe the FLSPs’ inequity aversion, which is combined into the conventional revenue distribution model. The proposed model aims to maximize the revenue of logistics service supply chain and obtains the best revenue distribution ratio of each member under equilibrium. In the numerical cases, the impacts of inequity aversion and the number of members with inequity aversion on the revenue distribution are discussed, respectively. The results show that a higher degree of FLSP’s advantageous inequity aversion corresponds to a lower revenue distribution ratio; a higher degree of FLSP’s disadvantageous inequity aversion corresponds to a higher revenue distribution ratio. Increasing the number of FLSP members with inequity aversion results in a higher profit of LSI and lower total utility of FLSPs and the utility of the supply chain. The more FLSP members with inequity aversion there are, the higher the LSI’s profit is, and the lower the total utility of FLSPs and the utility of supply chain are. In addition, the revenue distribution ratio of the FLSP increases with its relative fairness revenue coefficient among FLSPs.
Isoflavones were synthesized by two steps in good yields, starting from commercially available 2-hydroxyacetophenones and benzene analogs. First, intermediate 3-(dimethylamino)-1-(2-hydroxyphenyl) prop-2-en-1-ones were obtained by the condensation of 2-hydroxyacetophenones and DMF-DMA in DMF with high yields. Second, isoflavones were synthesized by irradiation of 3-(dimethylamino)-1-(2-hydroxyphenyl)prop- 2-en-1-ones in the presence of iodine using benzene analogs as solvent under a mercury lamp.
Microwave-promoted cyclocondensation of isoflavones with 3-amino[1,2,4]triazole gave 6-phenyl-7-(2-hydroxyphenyl)-1,2,4triazolo[4,3-a]pyrimidines as intermediates. Subsequent photocyclization of these intermediates delivered dibenzo[f,h][1,2,4]triazolo[3,4b]quinazolines as final products. Water was the only by-product in this two-step procedure. The products showed distinct fluorescence properties both in solution and in the solid state .
One-Pot Synthesis of 2H-Phenanthro[9,10-c]pyrazoles from Isoflavones by Two Dehydration Processes. -The title compounds are synthesized via cyclocondensation of isoflavones and hydrazine hydrate to obtain 3,4-diaryl-pyrazole intermediates. Subsequent photocyclization and dehydration of these pyrazoles affords the target compounds in moderate to good overall yields. -(WANG, Q.; ZHANG*, Z.; DU, Z.; HUA, H.; CHEN, S.; Green Chem. 15 (2013) 4, 1048-1054, http://dx.doi.org/10.1039/c3gc40205c ; Sch. Chem. Chem. Eng., Shaanxi Norm. Univ., Xian, Shaanxi 710062, Peop. Rep. China; Eng.) -S. Karsten 30-138
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