14366-67-7Relevant academic research and scientific papers
Silica: An efficient catalyst for one-pot regioselective synthesis of dithioethers
Kundu, Samir,Roy, Babli,Basu, Basudeb
, p. 26 - 33 (2014/01/23)
The development of a silica-promoted highly selective synthesis of 1,2 or 1,3-dithioethers via solvent-free one-pot tandem reactions of an allyl bromide with excess thiol at room temperature is described. The choice of silica gel, either pre-calcined or moistened with water, exhibited notable regioselectivity in the formation of dithioethers. Plausible mechanistic routes were explored and postulated.
1H- And13C-NMR and electron ionization (EI) mass spectrometric study of o- And p-substituted 1,n-diarylsulfonylalkanes, XC6H4so2(CH2)nso 2C6H4X (n = 2-5, 8, 10)+
Pihlaja, Kalevi,Kabilan, Senthamaraikannan,Ganapathi, Athiappan,Sankar, Punnaivanam
, p. 601 - 612 (2007/10/03)
1,n-Diphenylsulfonylalkanes, PhSO2(CH2)nSO2Ph (n =2-5, 8, 10) and their o- or p-Cl or -OMe derivatives were prepared and their 1H- and 13C-NMR and EI mass spectra recorded and analyzed. The chemical shifts of the aliphatic α- and β-carbons showed a clear dependence on the o-aryl substitution, the o-Cl being the most shielding for both. Clear low-field effects were found also for the aliphatic α-protons in o-Cl and o-OMe derivatives. In case of p-OMe derivatives a palpable shielding of the aliphatic α-protons was also found similarly to the β-protons of the o-OMe derivatives. Characteristic mass spectrometric fragmentations which reflected both the influence of the aryl substitution and the length of the alkyl chain were observed and sometimes also exhibited the sulphinic acid rearrangement.
Dipole Moments and UV Spectra of some Long-chain Molecules
Baliah, V.,Aparajithan, K.
, p. 255 - 259 (2007/10/02)
About one hundred compounds with long-chain molecular structure have been prepared (most of them are new).The dipole moments of four α,ω-bis(p-methoxyphenylthio)alkanes and five α,ω-bis(p-methoxyphenylsulphonyl)alkanes have been determined to find the effect of chain-length.In the case of sulphones, the observed values are compared with the values calculated for free rotation around all bonds intervening the end dipoles.The uv spectra of some 1,2-(distyrylsulphonyl)ethanes, and a number of α,ω-bis(arylsulphonyl)- and α,ω-bis(aryloxy)alkanes have been recorded to examine the applicability of the principle of chromophore additivity.
A New and Convenient Synthetic Method for Cyclopropyl Phenyl Sulfides
Tanaka, Kazuhiko,Uneme, Hideki,Matsui, Shuichi,Kaji, Aritsune
, p. 2965 - 2972 (2007/10/02)
The reactions of a variety of 1,3-bis(phenylthio)propanes with butyllithium have been shown to produce cyclopropyl phenyl sulfides in good to high yields.A new and convenient in situ preparation of 1-lithiocyclopropyl phenyl sulfide can be readily carried out by treating 1,3-bis(phenylthio)propane with 2 equiv. of butyllithium at 0 degC in THF.The reaction with electrophiles proceeds in good yield.O-Aryl and O-alkyl S-cyclopropyl dithiocarbonates also can be prepared in good yields. 1,2-Bis(phenylthio)ethane was converted to phenyl vinyl sulfide on treatment with butyllithium, while 1,4-bis(phenylthio)butane was recovered unchanged by a similar treatment.
