摘要:

AbstractA series of phthalocyanines (Pcs) substituted by phenoxy groups were synthesized through the route whose intermediates are selected to be phthalonitriles with different structures. These phthalocyanines and their intermediates are characterized by elemental analysis, IR and MS. The thermogravimetric loss and the aggregation behavior data of phthalocyanines are determined with the purpose to better understand the possible recording mechanism and to improve the dye's practical applications in the optoelectronic field.

ISSN:0009-4536    

DOI:10.1002/jccs.200700031

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY

摘要:

AbstractA convenient one‐pot synthesis of 2′‐amino‐ and 2′‐N‐phenylamino‐5α‐cholest‐6‐eno[6,7‐d]thiazole derivatives4‐9are reported. The synthesis involves the reaction of cholestan‐6‐ones1‐3with thiourea or phenylthiourea and iodine. The products have been characterized on the basis of IR,1H‐NMR and Mass, which find support in two cases from

ISSN:0009-4536    

DOI:10.1002/jccs.200700032

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY

摘要:

AbstractA rapid, simple and accurate spectrophotometric method is developed for the determination of ondansetron hydrochloride in pure and tablet formulations. The method depends on the charge‐transfer complexation between ondansetron base as n‐electron donor with chloranil as π‐acceptor to give a colored complex, which absorbs maximally at 470 nm. Beer's law is obeyed in the concentration ranges 70–980 μg mL−1with molar absorptivity of 4.47 × 102L mole−1cm−1. The proposed method is precise, accurate and specific for the quantitative determination of drug in bulk and tab

ISSN:0009-4536    

DOI:10.1002/jccs.200700033

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY

摘要:

AbstractThe solubilities of four surfactants, sodium bis‐2‐ethylhexyl sulfosuccinate (AOT), cetyltrimethylammonium chloride, didodecyldimethylammonium bromide, and n‐dodecyltrimethylammonium chloride in liquid refrigerant 1,1,1,2‐tetrafluoroethane (R134a) modified with methanol, ethanol, and 2‐propanol were measured. The measurements were performed under 25 and 50 bar at 25 °C. The solubility of AOT was as high as 92 mM in R134a with addition of 2% ethanol. Cytochrome c molecules were then verified to be soluble in the AOT‐containing and ethanol‐modified R134a solution. Accordingly, liquid R134a is suggested as a potential extraction solvent for hydroph

ISSN:0009-4536    

DOI:10.1002/jccs.200700034

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY

摘要:

AbstractA thorough investigation of the ethyl acetate soluble fraction from a methanol extract of the resin ofFerula foetidahas resulted in the isolation of a new sesquiterpene coumarin namelyepi‐conferdione (1), along with four known compounds, colladonin (2), karatavicinol (3), 8‐acetoxy‐5‐hydroxyumbelliprenin (4), and asacoumarin (5). These structures were elucidated on the basis of extensive spectroscopic techniques, including 1D and 2D NMR spectroscopy. The absolute configuration of the new compound was established by circular dichroi

ISSN:0009-4536    

DOI:10.1002/jccs.200700035

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY

摘要:

AbstractA total synthesis of (±)‐boonein (8) from bicyclo[2.2.1]ketone9is described. Bicyclo[3.2.1]lactone10is the key intermedia

ISSN:0009-4536    

DOI:10.1002/jccs.200700036

出版商:WILEY‐VCH Verlag    

年代:2007

数据来源: WILEY