68226-11-9Relevant academic research and scientific papers
Steric Effects in the Oxidation of Oxan-4-ols and Thian-4-ols by Vanadium(V)
Arjunan, Periaswamy Gounder,Lakshmanan, Joghee Gowder,Chandrasekara, Nallappan,Ramalingam, Kondareddiar,Selvaraj, Kuppusamy
, p. 1183 - 1186 (2007/10/02)
The rates of oxidation of 20 heterocyclic alcohols by vanadium(V) have been measured at 60 deg C in aqueous acetic acid medium in the presence of sulfuric and perchloric acid.The data indicate an overall second-order reaction at constant acid concentration, first-order each in alcohol and oxidant.The conformational effects on the rates of oxidation of various heterocyclic alcohols are discussed.An interesting observation in the present study is that t-2,t-6-diphenyl-c-3,c-5-dimethyloxolan-r-4-ol, an axial alcohol, reacts slower than corresponding equatorial epimer, c-2,c-6-diphenyl-t-3,t-5-dimethyl-oxan-r-4-ol, which is contrary to general expectations.
Dissociation Constants of the Cyanohydrins of Some Substituted Thian-4-ones
Nanjappan, Palaniappan,Satyamurthy, Nagichetti,Ramalingam, Kondareddiar
, p. 714 - 716 (2007/10/02)
The dissociation constants of cyanohydrins of some substituted thian-4-ones and thian-4-one 1,1-dioxides have been determined at 25 deg C in 80percent dioxan.The polymethyl thian-4-one cyanohydrins and r-2,t-6-diiphenyl-c-3-alkylthian-4-ones show increasing instability owing to the effect of axial crowding.
