Chelate synthesis of 3-ethoxycarbonyl-4-hydroxy-2-trifluoromethylpyridine from ethyl acetoacetate and trifluoroacetonitrile
作者:V. A. Dorokhov、L. S. Vasil'ev、F. E. Surzhikov、V. S. Bogdanov
DOI:10.1007/bf00700905
日期:1995.7
Ethyl 2-acetyl-3-amino-4,4,4-trifluoro-2-butenoate was synthesized by treatment of ethylacetoacetate with CF3CN in the presence of Ni(acac)2. Condensation of the diphenylboron chelate of the former with dimethylformamide dimethylacetal followed by refluxing in ethanol yielded 3-ethoxycarbonyl-4-hydroxy-2-trifluoromethylpyridine.
Synthesis of 4-hydroxy- and 3-aryl-4-amino- 2-trifluoromethylpyridines
作者:L. S. Vasil'ev、F. E. Surzhikov、O. G. Azarevich、V. S. Bogdanov、V. A. Dorokhov
DOI:10.1007/bf01431118
日期:1996.11
Schemes for synthesizing 3-acyl-4-amino(hydroxy)-2-trifluoromethylpyridines from 3-acyl 4-amino-5,5,5-trifluoro-3-penten-2-ones via their diphenylboron chelate complexes have been suggested.
Mechanochromic luminescence from N,O-Chelated diphenylborinates
作者:Shan Xue、Mengwei Li、Yi Han、Yulan Chen
DOI:10.1016/j.dyepig.2021.109484
日期:2021.9
photophysical and mechanochromic properties were systematically studied. As verified by both experimental and calculated results, all these compounds possess inherent D-A structures, and adopt highly distorted molecular conformations. Multiple weak intermolecularinteractions and relatively loose packing are prevailing in their crystal structures. These favorable structure features promise high solid-state
Chelate-assisted synthesis of pyrazolylidene derivatives from cyanoacetic acid hydrazide and O-methyl lactims
作者:S. V. Ruban、T. V. Potapova、S. V. Baranin、V. A. Dorokhov
DOI:10.1007/s11172-014-0732-2
日期:2014.10
Diphenylboron chelate of cyanoacetic acid hydrazide and O-methyl lactims were used to synthesize pyrrolidin-, piperidin-, and azepan-2-ylidene derivatives of 3-aminopyrazol-5-one.