Dodecanoic acid derivatives: Synthesis, antimicrobial evaluation and development of one-target and multi-target QSAR models
摘要:
In this study a series of dodecanoic acid derivatives (1-30) were synthesized and evaluated for in vitro antimicrobial activity against the panel of Gram positive, Gram negative bacterial and fungal strains. 4-Nitro phenyl dodecanoate (4) and quinolin-8-yl dodecanoate (5) emerged as most effective antibacterial agents, and 1-(4-benzylpiperazin-1-yl) dodecan-1-one (15) was found to be the most effective antifungal agent amongst the synthesized dodecanoic acid derivatives. Quantitative structure activity relationship (QSAR) studies performed by the development of one-target and multi-target models indicated that multi-target model was effective in describing the antimicrobial activity of dodecanoic acid derivatives as well demonstrated the importance of topological parameter, zero-order molecular connectivity index ((0)chi).
Lithium aluminum hydride-N-methylpyrrolidine complex. 1. Synthesis and reactivity of lithium aluminum hydride-N-methyplyrrolidine complex. An air and thermally stable reducing agent derived from lithium aluminum hydride
作者:Joseph C. Fuller、Eric L. Stangeland、Thomas C. Jackson、Bakthan Singaram
DOI:10.1016/s0040-4039(00)76746-3
日期:1994.3
A 1:1 lithiumaluminum hydride-N-methylpyrrolidine complex (LAHNMP), obtained by the reaction of lithiumaluminumhydride with N-methylpyrrolidine, is a powerful reducing agent, comparable to lithiumaluminumhydride in its reducing properties. LAHNMP reduces esters, lactones, anhydrides and carboxylic acids to the corresponding alcohols. Test reductions show that LAHNMP also reduces a wide range of
A novel aromatic carbocation-based coupling reagent for esterification and amidation reactions
作者:Thanh V. Nguyen、Demelza J. M. Lyons
DOI:10.1039/c4cc09539a
日期:——
Driven by aromatization: a novel tropylium-based coupling reagent has been developed to facilitate nucleophilic coupling reactions of carboxylic acids.
由芳构化驱动:一种新型基于环庚基的偶联试剂已经开发出来,以促进羧酸的亲核偶联反应。
Aminoborohydrides. 3. A facile reduction of tertiary amides to the corresponding amines and alcohols in high purity using lithium aminoborohydrides. Sterically controlled selective CN or CO bond cleavage
作者:Gary B. Fisher、Joseph C. Fuller、John Harrison、Christian T. Goralski、Bakthan Singaram
DOI:10.1016/s0040-4039(00)77498-3
日期:1993.2
Lithiumaminoborohydrides (LiABH3), obtained by the reaction of n-BuLi with amine-boranes, are powerful reducing agents for the reduction of tertiary amides to the correspondingamines or alcohols. Lithium pyrrolidinoborohydride (LiPyrrBH3) and lithium diisopropylaminoborohydride (LiH3BN(i-Pr)2) reduce both aliphatic and aromatic tertiary amides to give either the corresponding alcohol or amine, depending
A mild method for the reduction of amides to aldehydes using 1,1,3,3-tetramethyldisiloxane/titanium(IV) isopropoxide reducing system is described. The reaction occurs under mild conditions and allows the reduction of aromatic as well as aliphatic, tertiary amides to the corresponding aldehydes, in good yields. This methodology was extended to the reduction of aromatic secondary and primary amides to
INFRARED DYE FOR SILVER HALIDE-BASED PHOTOGRAPHIC ELEMENTS
申请人:Zengerle Paul L.
公开号:US20090234131A1
公开(公告)日:2009-09-17
A non-infrared sensitized low silver photographic element with a non-light sensitive layer, preferably an antihalation layer, containing a diphenylaminocyclopentene heptacyanine benzothiazolium infrared dye where the benzothiazolium groups have electron-withdrawing substituents on the phenyl ring and solubilzed alkyl groups on the nitrogen. The infrared dye can be present as a liquid-crystalline dispersion. This class of infrared dyes form J-aggregrated species in a liquid-crystalline or a solid particle dispersion with high IR density and low visible absorbance.