ChemInform Abstract: Homolytic Addition Reaction of Dimethyl Phosphite with O- and N-Allyl Derivatives of N′-Phenylcarbamic Acid.

ChemInform ◽  
1990 ◽  
Vol 21 (47) ◽  
Author(s):  
A. I. RAKHIMOV ◽  
B. L. RYSIN
ChemInform ◽  
2003 ◽  
Vol 34 (34) ◽  
Author(s):  
Sho-ichi Iwamatsu ◽  
Fumiaki Ono ◽  
Shizuaki Murata

ChemInform ◽  
1990 ◽  
Vol 21 (13) ◽  
Author(s):  
B. U. MINBAEV ◽  
N. I. YASHNOVA ◽  
B. D. ABIYUROV

ChemInform ◽  
2010 ◽  
Vol 25 (26) ◽  
pp. no-no
Author(s):  
T. T. VASIL'EVA ◽  
S. I. GAPUSENKO ◽  
S. V. VITT ◽  
A. B. TERENT'EV

1973 ◽  
Vol 51 (11) ◽  
pp. 1797-1800 ◽  
Author(s):  
N. Gurudata ◽  
F. J. M. Rajabalee

Eight 2,3-dideoxy-2-amino-3-nitrosugar derivatives have been obtained by an elimination–addition reaction on the α and β anomers of methyl-4,6-O-benzylidene-3-deoxy-3-nitro-glucopyranoside-2-acetate. P.m.r. is used to show that the compounds exist in the CE conformation. 13C.m.r. data are presented for three anomeric pairs. Trends in the C-13 chemical shifts are found to be similar to those reported in other studies of carbohydrates. Exceptions in direction and magnitude of chemical shift differences are discussed.


1969 ◽  
Vol 24 (7) ◽  
pp. 824-832 ◽  
Author(s):  
Gerhard Wegner

The solid-state polymerization of functional derivatives of 2,4-hexadiin-1,6-diol caused by light or by heat was investigated. A qualitative survey demonstrates that the presence of groups capable of hydrogen-bonding are one of the most important factors for solid-state reactivity of conjugated triple-bonds. Compounds which do not form hydrogen-bonds were unreactive in most cases. Urethanes were the most reactive class of derivatives, 2,4-hexadiin-1,6-diol-bis-phenylurethane giving the best results. The relation and the reactivity of several modifications of this compound are described. Heating of one modification of 2,4-hexadiin-1,6-diol-bis-phenylurethane at temperatures between 70 and 120°C yielded in a topotactic reaction highly crystalline fibres of a coppercoloured polymer. Time-conversion studies were made and the activation energy of the polymerization determined to 19 kcal/mole. The mechanism of polymer-formation is discussed. It is highly probable that poly-1,4-bis-phenylcarbamoyloxymethyl-trans-butatrien, a polymer with three cumulated double-bonds per repeating-unit, is formed by a 1,4-addition reaction.


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