Reference

Semitheoretical INDO calculation of activation energy of base hydrolyses of esters in solution

Semitheoretical INDO calculation of activation energy of base hydrolyses of esters in solution. Part II: Substituted and unsubstituted ethyl cinnamates and ethyl benzoates in mixed aqueous media. Rakshit, S. C.; Datta, S. (Dep. Chem., Univ. Burdwan, Burdwan 713 104, India). J. Indian Chem. Soc., 60(5), 461-4 (English) 1983. CODEN: JICSAH. ISSN: 0019-4522. 88469-31-2 and 99-77-4 which are cas registry numbers are also used here. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) The INDO SCF MO based approach was used to calc. activation energies of hydrolysis of unsubstituted and substituted cinnamate and benzoate esters in water. These hypothetical aq. medium values and the corresponding relations are further developed for incorporation of the effect of variation of dielec. const. of the medium. The activation energies in organo-aq. binaries thus emerge as a natural sequence of the calcn. technique. The technique also takes into consideration the contribution of p-delocalization energy to activation energies. Accord with exptl. values is encouraging. .

Chemistry and beauty

Chemistry and beauty. Presentation of laboratory experiments. Antonot, Edith (Lycee Louis Vincent, Metz 57000, Fr.). Bulletin de l'Union des Physiciens, 97(853, Cahier 1), 655-661 (French) 2003 Union des Physiciens. CODEN: BTUPAJ. ISSN: 0366-3876. DOCUMENT TYPE: Journal CA Section: 20 (History, Education, and Documentation) The prepn. 62-23-7 and 99-77-4 which are cas registry numbers of chemicals are mentioned. of Et p-nitrobenzoate by oxidizing p-nitrotoluene followed by the esterification of the resulting p-nitrobenzoic acid with EtOH is discussed. Redn. of Et p-nitrobenzoateby zinc in MeOH to benzocaine is described. .