JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 2
·H1
·
IF 3.12
Bin Hu,Chun-yang Li,Jun-wei Chu,Zeng-chen Liu,Xin-lei Zhang,Lin Jin
Three new 2, 5-di(2-thienyl)-1H-pyrrole(DTP) derivatives, 10-[4-(2,5-Di- thiophen-2-yl-pyrrol-1-yl)-phenyl]-10H-pheno-thiazine (TPPT), 10-[4-(2,5-Di- thiophen-2-yl-pyrrol-1-yl)-phenyl]-10H-phenox azine (TPPO) and 10- [4-(2,5 -Di-thiophen-2-yl-pyrrol-1-yl)-phenyl]-10H-acridin-9-one (TPAO), were synthesized and characterized. TPPT and TPPO showed similar absorption and emission feature owing to similar chemical structure, TPAO displayed bathochromic-shift for both absorption and emission feature due to the existence of ketone group. All the monomers could be electropolymerized to form their polymer film on the electrode surface via oxidative coupling reactions of DTP units. PTPPT film showed yellow-green, green and purple red color upon different applied potentials. PTPPO and PTPAO films exhibited green and yellow at the neutral state, respectively, and turned into the similar violet color for the oxidized state. Moreover, the copolymer P(TPPT/EDOT) and P(TPAO/EDOT) not only showed obvious color change(red, yellow, green and blue), but also possessed better electrochemical stability.
研究领域:
材料科学
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2013
·Vol. 41
·期 4
·2345-2352
·
IF 0.88
Liu Bin,Li Xiao Fang,Zhang Jie,Wang Meng Ting,Zeng Rong Jin
The conjugate addition of bromoform with 2-aryliene-2,3-dihydro-1 H -pyrrolizin-1-ones in the presence of magnesium afforded novel 2,2-dibromo-3-arylspiro[cyclopropane-1,2′-pyrrolizin]-1′(3′ H )-ones in moderate yield. The structures of all the products were characterized thoroughly by 1 H NMR, 13 C NMR, infrared spectroscopy, and mass spectrum.
研究领域:
有机化学
·
合成化学
·
光谱学
✓ 已验证
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2021
·
IF 5.541
Rui Li,Xiaoqing Yin,Shiyi Zhang,Jinchu Yang,Mingqin Zhao
Amadori compounds, produced during Maillard reaction , are considered as precursors of flavor compounds . On the basis of Amadori compounds, herein two Amadori analogues, di- O -isopropylidene-2,3:4,5- β - D -fructopyranosyl alanine ester (A-ARP) and di- O -isopropylidene-2,3:4,5- β - D -fructopyranosyl proline ester (P-ARP), were chemically synthesized and their possibility as flavor precursors was evaluated by thermogravimetry (TG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), and pyrolysis gas chromatography-mass spectrometry (Py-GC/MS). TG-DTG analyses indicated that the samples were stable at room temperature , and the largest mass-loss rates ( T p ) were at 208 and 278 °C, respectively. Upon thermal pyrolysis, the major flavor substances were butan-2-one, ethyl propionate , furfural , and dl -limonene for A-ARP, while 2,5-dimethylfuran, heptan-2-one, acetophenone , and 1 H -pyrrole for P-ARP. The flavor profiles are different from that of corresponding Amadori compounds, and are influenced by pyrolytic temperatures. These results provide one method to regulate the species and amounts of the degraded flavor products. Finally, the possible mechanisms of the pyrolytic processes are proposed.
研究领域:
食品科学
·
分析化学
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2015
·Vol. 18
·期 6
·1738-1750
·
IF 8.02
Jiliang Ma,Linxin Zhong,Xinwen Peng,Runcang Sun
A simple and effective synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones and their derivatives from aldehydes, β-dicarbonyl compounds and urea or thiourea using D-xylonic acid both as a green solvent and an effective catalyst is described. Taking the environment and economy into account, the work presented here has the merits of environmental friendliness, easy operation, simple work-up, excellent yields and the avoidance of organic solvents and inexpensive catalysts. In addition, the good properties of D-xylonic acid have also been validated by the synthesis of 5-phenyl-1(4-methoxyphenyl)-3[(4-methoxyphenyl)-amino]-1H-pyrrol-2(5H)-one and 12-phenyl-9,9-dimethyl-8,9,10,12-tetrahydrobenzo[a]xanthen-11-one. The synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR and melting point.
研究领域:
有机化学
·
绿色化学
·
催化
·
合成
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）