32400-20-7Relevant academic research and scientific papers
Sequential hydrozirconation/cyclization of dienes, a new route toward trans 2-substituted vinylcyclopentanes
Clergue, Sebastien,Vasse, Jean-Luc
supporting information, p. 1506 - 1509 (2014/04/03)
The diastereoselective synthesis of trans-2-substituted vinylcyclopentanes is described. The method is based on the intramolecular coupling of 7-methoxy-1,5-dienes involving a sequential activation of the C=C double bonds via hydrozirconation and TMSOTf-promoted allylation.
Method and intermediates for the synthesis of korupensamines
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, (2008/06/13)
Activated isoquinolines and naphthalenes are disclosed which are useful to prepare korupensamines, michellamines and analogs thereof.
Detection of hydrogen peroxide with optical indicator chalcogen compounds
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, (2008/06/13)
Optical indicator chalcogen (selenide or sulfide) compounds responsive to oxidants, e.g., hydrogen peroxide, and a method for using such indicators. Upon oxidation the resulting intermediate undergoes spontaneous elimination of the chalcogen residue to yi
Prostaglandins of the D series, and tranquilizers and soporifics containing the same
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, (2008/06/13)
The present invention provides novel prostaglandins D, that is, 13,14-dihydro-15-keto-PGDs, which have an excellent sedative and sleep-inducing activity, and so they are useful for tranquilizer and/or soporifics.
Optical indicator 3,4-dihydro-2-quinolones
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, (2008/06/13)
Optical indicator chalcogen (selenide or sulfide) compounds responsive to oxidants, e.g., hydrogen peroxide, and methods for preparing and using such indicators. Upon oxidation the resulting intermediate undergoes spontaneous elimination of the chalcogen
BESTIMMUNG DER IONENPAAR-BASIZITAT VON LITHIUM- UND KALIUMAMIDEN
Ahlbrecht, Hubertus,Schneider, Gunther
, p. 4729 - 4742 (2007/10/02)
Ion pair basicities of lithio and potassio salts of some secondary amines were determined by equilibration with benzyl compounds.With these bases it is possible to span a range of about 19 pK-units from pK = 27 up to 46.The structural dependence of thermodynamic as well as kinetic basicity is discussed.Some new effective amide bases for preparative purposes are recommended.For the first time the pK-value of toluene has been determined by direct equilibration.It amounts to 40.7 in tetrahydrofuran.
Fluorogenic dihydroquinolone and dihydrocoumarin indicators for hydrogen peroxide
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, (2008/06/13)
Fluorogenic indicator compounds responsive to the presence of hydrogen peroxide and methods and test compositions for determining hydrogen peroxide in a test sample. Preferred indicator compounds are 3,4-dihydrocoumarin derivatives and 3,4-dihydro-2-quinolone derivatives, especially those having a dialkylamino group at the 7-position. Such particularly preferred compounds are of the formula: STR1 wherein R1 is hydrogen, cyano, or --COOR6, --CONHR6 or --CON(R6)2 where R6 is hydrogen, alkyl, alkenyl, or aryl; R3 and R4 are lower alkyl; and Y is =O or =N--R5 where R5 is hydrogen or lower alkyl. The indicator compounds yield highly fluorescent products upon oxidation by hydrogen peroxide in the presence of a peroxidatively active substance and are useful in analytical systems which generate hydrogen peroxide in response to an analyte under determination in a test sample.
