My watch list
my.chemeurope.com  
Login  

7,119 Newest Publications about the topic condensation

rss

You can refine your search further. Select from the filter options on the left to narrow down your results.

N,N′‐Bis(2‐thienylmethylene)ethane‐1,2‐diamine

01-Dec-2007 | Wang, Da‐Qi; Wang, Qiang; Xiao, Li‐Jun, Acta Crystallographica Section E, 2007

The title compound, C12H12N2S2, was prepared from a condensation reaction of thiophene‐2‐carboxaldehyde with ethylenediamine in refluxing ethanol. The molecule adopts a Z‐shaped conformation, with the two thiophene rings lying on either side of the Csp3—Csp3 bond. The two thiophene rings form a ...

more

Rheosmin (“Raspberry Ketone”) and Zingerone, and Their Preparation by Crossed Aldol-Catalytic Hydrogenation Sequences

25-Aug-2006 | Leverett R. Smith, The Chemical Educator, 2006

Preparations of the two closely-related natural products rheosmin (raspberry ketone, 4-(4-hydroxyphenyl)-2-butanone) and zingerone (4-(4-hydroxy-3-methoxyphenyl)-2-butanone), are well-suited for the introductory organic laboratory. The crossed-aldol condensation of 4-hydroxybenzaldehyde with ...

more

Growth and Optical Properties of Quantized CdS Crystallites in TEOS Silica Xerogels

03-Nov-2004 | N. N. Parvathy, G. M. Pajonk, A. Venkateswara Rao, Journal of Materials Synthesis and Processing, 2004

Quantized CdS crystallite-doped tetraethylorthosilicate (TEOS) silica xerogels are prepared by the sol-gel method. In this method, cadmium acetate [Cd(CH3COO)22H2O]-doped TEOS alcogel is formed by the hydrolysis and polycondensation of ethanolic TEOS in the presence of hydrochloric acid (HCl) and ...

more

Polycondensation of the Components of the Lignin–Carbohydrate Complex of Steam-Exploded Wood

01-Nov-2004 | O. V. Startsev, B. N. Salin, Doklady Chemical Technology, 2004

Polycondensation of the Components of the Lignin–Carbohydrate Complex of Steam-Exploded Wood Content Type Journal Article Pages 30-33 DOI 10.1023/A:1026607820038 Authors O. V. Startsev B. N. Salin Journal Doklady Chemical Technology Online ISSN 1573-8957 Print ISSN ...

more

3-Hydroperoxy-4,5,6,7-tetrahydro-toluene-2,a-sultims: Preparation and Reactions

19-Feb-2004 | Katrin Illgen, Christine Hartung, Rainer Herzschuh, Bärbel Schulze, Molecules Online, 2004

Cyclic sulfinamides, a new class of recoverable chiral sulfoxides, have been used for the control of numerous asymmetric reactions including aldol condensation [1,2] and the asymmetric synthesis of amines [3]. The present communication reports on the synthesis of stable ...

more

Synthesis of 2',3'-Dideoxy-3'-C-hydroxymethylcytidine Phosphonomethyl Derivatives

19-Feb-2004 | Annika Niklasson, Ingemar Kvarnström, Björn Classon, Bertil Samuelsson, Molecules Online, 2004

. Phosphonomethyl substituted 2',3'-Dideoxy-3'-C-hydroxymethylcytidines have been synthesized and evaluated for their anti HIV-1 activities. The sugar moiety was synthesized starting from (S)-5-hydroxymethylfuran-2-(5H)-one using photocatalyzed addition of methanol. Reduction of the lactone, ...

more

Synthesis and Theoretical Study of Mannich Type Reaction Products of 3-Formylchromones with Triazoles and Amides and Nucleophilic Formation of 2,3-Disubstituted-4-Chromanones

19-Feb-2004 | Henrieta Stankovicová, Walter M. F. Fabian, Margita Lácová, Molecules Online, 2004

The semiempirical PM3 method has been used to study possible reaction paths of the condensation of 3-formylchromones with amides and triazoles. Optimal geometries of intermediates 7, products 8 and all other putative reaction intermediates were obtained. Pertinent transition states, TS I for ...

more

Mass spectrometric detection of cyclic sulfides in the polycondensation of dibromoalkanes with dithiols

01-Jan-1986 | Montaudo, G.; Scamporrino, E.; Puglisi, C.; Vitalini, D., Journal of Polymer Science: Polymer Symposia, 1986

Abstract MS analysis was used to identify the cyclic oligomers formed in the polycondensation reactions of dibromoalkanes with dithiols. Cyclic oligomers with only an even number of repeating units are detected among the poly condensation reaction products.

more

Mass spectrometric detection of cyclic sulfides in the polycondensation of dibromoalkanes with dithiols

01-Jan-1986 | Montaudo, G.; Scamporrino, E.; Puglisi, C.; Vitalini, D., Journal of Polymer Science: Polymer Symposia, 1986

Abstract MS analysis was used to identify the cyclic oligomers formed in the polycondensation reactions of dibromoalkanes with dithiols. Cyclic oligomers with only an even number of repeating units are detected among the poly condensation reaction products.

more

Page 712 From 712
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE