Reference

Transfer hydrogenation and transfer hydrogenolysis: XII

Transfer hydrogenation and transfer hydrogenolysis: XII. Selective hydrogenation of fatty acid methyl esters by various hydrogen donors. Tagawa, T.; Nishiguchi, T.; Fukuzumi, K. (Fac. Eng., Nagoya Univ., Nagoya, Japan). J. Am. Oil Chem. Soc., 55(3), 332-6 (English) 1978. CODEN: JAOCA7. ISSN: 0003-021X. DOCUMENT TYPE: Journal CA Section: 45 (Fats and Waxes) The selective hydrogenation of Me linoleate [112-63-0] was examd. using various org. compds. as H donors in the presence of homogeneous and metallic Pd catalysts. Complete selectivity to monoenes and relatively little formation of isolated trans double bonds were realized by H transfer from L-ascorbic acid [50-81-7] at 47% conversion of starting material to hydrogenation products. The hydrogenation by trans-1,2-cyclohexanediol [1460-57-7] catalyzed by RuH2(PPh3)4 (I) [19529-00-1] also gave high selectivity to cis-monoenes. In the reaction catalyzed by I, the presence of these OH compds. increased the isomerization of Me elaidate [1937-62-8] to cis-monoenes.

Online HPLC-Exciton CD Analysis Using a Chiral Benzoyl Agent, (S)-TBMB Carboxylic Acid: A Promising Approach toward Selective Identification of Enantiomeric Diols and Diamines

Online HPLC-Exciton CD Analysis Using a Chiral Benzoyl Agent, (S)-TBMB Carboxylic Acid: A Promising Approach toward Selective Identification of Enantiomeric Diols and Diamines. Nishida, Yoshihiro; Kim, Jeong-Hwan; Ohrui, Hiroshi; Meguro, Hiroshi ( Department of Applied Biological Chemistry Faculty of Agriculture, Tohoku University, Sendai 981, Japan). 1460-57-7 and 5057-98-7 are also occured in this study. Journal of the American Chemical Society, 119(6), 1484-1485 (English) 1997 American Chemical Society. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 80 (Organic Analytical Chemistry) A promising way to det. enantiomeric 1,2-diols and 1,2-diamines is proposed, which involves derivatization with a chiral benzoyl agent, (S)-TBMB carboxylic acid, followed by the online HPLC-CD anal. based on exciton CD chirality rules. The way called online HPLC-exciton CD method enables one to sep. and det. enantiomeric diols and diamines in both high selective and sensitive manners. .