Synthesis of Dihydrobenzoheterocycles through Al(OTf)3-Mediated Cascade Cyclization and Ionic Hydrogenation
摘要:
A facile and versatile synthesis of dihydrobenzoheterocycles via Al(OTf)(3)-mediated cascade cyclization and ionic hydrogenation has been developed. The reaction is applicable to a wide range of substrates with various functional groups to afford the corresponding products in good yields.
Design, Synthesis and Evaluation of Novel Trichloromethyl Dichlorophenyl Triazole Derivatives as Potential Safener
作者:Ke-Liang Guo、Li-Xia Zhao、Zi-Wei Wang、Shu-Zhe Rong、Xiao-Lin Zhou、Shuang Gao、Ying Fu、Fei Ye
DOI:10.3390/biom9090438
日期:——
the crop toxicity problem and exploit the novel potential safener for fenoxaprop-P-ethyl herbicide, a series of trichloromethyl dichlorobenzene triazole derivatives were designed and synthesized by the principle of active subunit combination. A total of 21 novel substituted trichloromethyl dichlorobenzene triazole compounds were synthesized by substituted aminophenol and amino alcohol derivatives as
Colorant compositions are useful for a wide variety of product applications. For example, colorants are used in tinting of polymers, providing colors to aqueous solution(s), and affording color to solid or semi-solid products such as detergents. Disclosed herein are colorant compositions having a triphenylmethane (“TPM”) structure having improved stability to alkaline conditions. Thus, the colorant compositions resist decolorization, even at relatively high pH levels.
Azodyestuffs derived from 5-membered heterocyclic amines and aromatic couplers containing sulpho-groups, or salts thereof and their use in dyeing polyamide fibres
申请人:EASTMAN KODAK COMPANY
(a New Jersey corporation)
公开号:EP0020161A2
公开(公告)日:1980-12-10
Mono azo dyes are derived from certain diazotized 5- membered heterocyclic amines and certain aniline, 1,2,3,4-tetrahydroquinoline and benzomorpholine couplers containing sulphoalkyl groups. The amine and coupler nuclei may be substituted. These dyes impart fast violet to blue shades to polyamide fibres.
Colorants and intermediates therefor having branched poly(oxyalkylene)moieties, and their manufacture
申请人:MILLIKEN RESEARCH CORPORATION
公开号:EP0529162A1
公开(公告)日:1993-03-03
Colorants and compositions useful as a fugitive or permanent colorant for a variety of substrates, or as intermediates for their manufacture, and having one or more improved properties of enhanced aqueous washability, compatibility with and non-extractibility from thermoplastic resins, or reactivity with resins having reactive functionality, said composition having the formula C(Z)₁₋₈ wherein:
C is the residue of a reactant having from 1-8 nucleophilic site residues to which the Z moieties are attached; said Z moieties containing at least about 60 weight percent of poly(oxyalkylene) which is comprised of
(a) at least one glycidol residue segment of 2-6 glycidol residues attached to a nucleophilic site of C, wherein said poly(oxyalkylene) contains a total of from 2-20 glycidol residues,
(b) and wherein said poly(oxyalkylene) further contains the residues of one or more other epoxide reactants of ethylene oxide (EO), propylene oxide (PO), or butylene oxide (BO), or mixtures thereof, wherein said poly(oxyalkylene) contains a total of from about 10 to about 600 of said EO, PO or BO residues, or mixtures thereof, at least about 75 mole percent of which are EO residues,
(c) and with the provisions that the ratio of the total of - O-PO- and -O-BO- linkages of all glycidol residues to the total of all functional oxy linkages of said glycidol residues is less than one, and the molar ratio of EO residues to glycidol residues is from 4 to 75.