14318-66-2Relevant articles and documents
Aggregation induced convertible third-order nonlinear optical absorptions of the phenoxazinium containing films prepared by sol-gel method
Zhang, Fei,Miao, Jia-Tao,Fang, Yu,Sun, Ru,Guo, Xiao-Zhi,Song, Ying-Lin,Ge, Jian-Feng
, p. 496 - 501 (2015)
The preparation and optical properties of phenoxazinium dye containing optical films by a sol-gel method are reported. The monomer of the phenoxazinium dye substituted with a hydroxyl group, prepared from 3-methoxyaniline by a five-step sequence, can be directly converted to the sol-gel precursor. The preparation and optical properties of phenoxazinium dye containing optical films are reported by in situ sol-gel spin coating with different mole ratios of the precursor to tetraethylorthosilicate. The UV-visible absorption spectra of the films were recorded and the dye aggregation phenomena were discussed. The third-order nonlinear optical properties of the films were measured by a picosecond Z-Scan method at 532 nm. The results indicate that the third-order nonlinear optical absorptions of the films are turned from the reverse saturation absorption with lower dye doping ratios to saturation absorption with higher doping ratios, which induced by the dye aggregation.
Photoinduced Hydroarylation and Cyclization of Alkenes with Luminescent Platinum(II) Complexes
Cheng, Hanchao,Lam, Tsz-Lung,Liu, Yungen,Tang, Zhou,Che, Chi-Ming
supporting information, p. 1383 - 1389 (2020/11/30)
Photoinduced hydroarylation of alkenes is an appealing synthetic strategy for arene functionalization. Herein, we demonstrated that aryl radicals generated from electron-deficient aryl chlorides/bromides could be trapped by an array of terminal/internal aryl alkenes in the presence of [Pt(O^N^C^N)] under visible-light (410 nm) irradiation, affording anti-Markovnikov hydroarylated compounds in up to 95 % yield. Besides, a protocol for [Pt(O^N^C^N)]-catalyzed intramolecular photocyclization of acrylanilides to give structurally diverse 3,4-dihydroquinolinones has been developed.
Anchimerically Assisted Selective Cleavage of Acid-Labile Aryl Alkyl Ethers by Aluminum Triiodide and N, N-Dimethylformamide Dimethyl Acetal
Sang, Dayong,Yue, Huaxin,Zhao, Zhengdong,Yang, Pengtao,Tian, Juan
, p. 6429 - 6440 (2020/07/14)
Aluminum triiodide is harnessed by N,N-dimethylformamide dimethyl acetal (DMF-DMA) for the selective cleavage of ethers via neighboring group participation. Various acid-labile functional groups, including carboxylate, allyl, tert-butyldimethylsilyl (TBS), and tert-butoxycarbonyl (Boc), suffer the conditions intact. The method offers an efficient approach to cleaving catechol monoalkyl ethers and to uncovering phenols from acetal-type protecting groups such as methoxymethyl (MOM), methoxyethoxymethyl (MEM), and tetrahydropyranyl (THP) chemoselectively.
