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Intramolecular hydrogen bond guanidines

The reaction may be carried out successfully by the conventional fusion-technique. In the course of the s5mthesis of numerous aryl- and alkyl-biguanides by this procedure, the substituted guanidine rather than the biguanide was occasionally formed in a side reaction. In such cases the biguanide first formed may be cleaved partially by way of an intramolecular hydrogen-bonded form (602) (cf. section VI, B3). [Pg.11]

Kovacevic, B., Glasovac, Z. and Maksic, Z.B. (2002) The intramolecular hydrogen bond and intrinsic proton affinity of neutral organic molecules A,iV, iV"-tris(3-aminopropyl) guanidine and some related systems. Journal of Physical Organic Chemistry, 15, 765-774. [Pg.46]

For horse liver alcohol dehydrogenase, denaturation by guanidine hydrochloride resulted in a decrease in phosphorescence lifetime parallel with loss of activity.(79) With urea as a denaturant, the decrease in phosphorescence lifetime appeared cooperative, and it is suggested that the denaturant loosened intramolecular interactions (such as hydrogen bonds), resulting in greater fluidity of the tryptophan environment.(80)... [Pg.129]


See other pages where Intramolecular hydrogen bond guanidines is mentioned: [Pg.107]    [Pg.172]    [Pg.33]    [Pg.339]    [Pg.595]    [Pg.107]    [Pg.49]    [Pg.24]    [Pg.42]    [Pg.1075]    [Pg.463]    [Pg.2059]    [Pg.74]    [Pg.1284]    [Pg.94]    [Pg.614]    [Pg.109]    [Pg.1817]    [Pg.83]    [Pg.2229]    [Pg.2213]    [Pg.2063]    [Pg.456]    [Pg.158]    [Pg.4]   
See also in sourсe #XX -- [ Pg.30 ]




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