Results 251 to 260 of about 11,464 (289)
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Cellulose solutions in dipolar aprotic solvents
Polymer Science Series A, 2010Preparation conditions and properties of cellulose solutions in DMAA containing 7–8% lithium chloride are considered. Investigation of the optical anisotropy and structure of cellulose solutions in this solvent confirms that the LS state is attained with an increase in the concentration of cellulose.
A. K. Dibrova, O. A. Khanchich
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Mannich reactiohs of aryltrialkylstannunes in aprotic solvents
Tetrahedron, 1989Abstract Aryltributyl- and aryltrimethyl-stannanes react with a range of N , N -dialkylmethylene-imonium salts to afford N , N -dialkylaminomethyl derivatives in good yields. The method can be used to obtain regloisomers that are not available using classical procedures.
Mark S. Cooper +4 more
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Cyanoethylation of the salts of cyanoguanidine in aprotic solvents
Canadian Journal of Chemistry, 1979The reactions of lithium or sodium salts of cyanoguanidine (1) with acrylonitrile in aprotic solvents result in the rapid formation of N,N-bis(2-cyanoethyl)-N′-cyanoguanidine (3) followed by a slower intramolecular cyclization of 3 leading to 4-amino-1-(2-cyanoethyl)-5,6-dihydro-2-pyrimidinylidenecyanamide (4). A tentative assignment of the tautomeric
Aleksandrowicz, Piotr +3 more
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Polarography of organic compounds in aprotic solvents
Talanta, 1965Abstract A review of the polarography of organic compounds in aprotic solvents is presented.
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Sulfolane: A Versatile Dipolar Aprotic Solvent
Organic Process Research & Development, 2012Sulfolane is a highly stable and attractive alternative to other more common dipolar aprotic solvents such as DMSO, DMF, DMAC, and NMP. Sulfolane is more toxic than the other solvents but has a very low skin penetration in comparison to that of the others. A high skin penetration is not beneficial for organic solvents as dissolved toxic compounds might
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Replacing polar aprotic solvents with water in organic synthesis
Current Opinion in Green and Sustainable Chemistry, 2023Yanlong Gu
exaly
Extraction of eleutherococcus by aprotic solvents
Chemistry of Natural Compounds, 1989A. P. Sakharov +2 more
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Desiccant efficiency in solvent drying. 3. Dipolar aprotic solvents
The Journal of Organic Chemistry, 1978D R, Burfield, R H, Smithers
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INOTROPIC ACTIONS OF DIPOLAR APROTIC SOLVENTS
The Journal of Pharmacology and Experimental Therapeutics, 1970openaire +2 more sources
The reaction of cyanopyridines with sodium borohydride in aprotic solvents
Tetrahedron Letters, 1969S I, Yamada, M, Kuramoto, Y, Kikugawa
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