66685-28-7Relevant articles and documents
Photocatalytic synthesis of tetra-substituted furans promoted by carbon dioxide
K?nig, Burkhard,Ritu,Tian, Ya-Ming,Wang, Huaiju
, p. 241 - 246 (2022/01/06)
We report a simple protocol for the transition metal-free, visible-light-driven conversion of 1,3-diketones to tetra-substituted furan skeleton compounds in carbon dioxide (CO2) atmosphere under mild conditions. It was found that CO2could be incorporated at the diketone enolic OH position, which was key to enabling the cleavage of a C-O bond during the rearrangement of a cyclopropane intermediate. This method allows for the same-pot construction of two isomers of the high-value tetra-substituted furan scaffold. The synthetic scope and preliminary mechanistic investigations are presented.
Hybrid tetra-aryl ethylene compound, polymer and preparation method and application thereof
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Paragraph 0105; 0107; 0108; 0109, (2017/09/05)
The invention discloses a hybrid tetra-aryl ethylene compound. The structure of the hybrid tetra-aryl ethylene compound is as shown in the specification, wherein, Ar1 is phenyl or hexahydric heteroaryl; Ar2 and Ar3 are phenyl, hexahydric heteroaryl or quinary heteroaryl independently and respectively; X is nitrogen, oxygen, sulphur or silicon; R1, R2 and R3 are hydrogen, fluorine, chorine, bromine, iodine, methyl, ethyl, propyl, isopropyl, normal-butyl, isobutyl, tertiary butyl, methoxy, ethyoxyl, amino, hydroxyl, carboxyl, nitryl, sulfonic acid group, trifluoromethyl, phenyl, benzyl, benzoyl, para-bromophenyl, para-fluorophenyl, thiophene, pyridine, or crown ether. The invention further discloses a preparation method of the hybrid tetra-aryl ethylene compound and an application thereof, and discloses a polymer of the hybrid tetra-aryl ethylene compound, a preparation method and an application thereof. The hybrid tetra-aryl ethylene compound is unique in structure performance; the compound has good photochromic performance as well as excellent aggregation-induced emission performance.
Bi(OTf)3-mediated cycloisomerization of γ-alkynyl arylketones: Application to the synthesis of substituted furans
Chang, Meng-Yang,Cheng, Yu-Chieh,Lu, Yi-Ju
supporting information, p. 1264 - 1267 (2015/03/14)
A novel Bi(OTf)3-mediated cycloisomerization of γ-alkynyl arylketones 4, 7, or 10 with molecular sieve (MS) in MeNO2 affords 3-substituted furans 3, 8, or 11 at rt for 3 h in moderate to good yields. The method provides mild, less-to