Detail of "2566-97-4"

Reference

Transfer hydrogenation and transfer hydrogenolysis

Transfer hydrogenation and transfer hydrogenolysis. XV. Homogeneous selective hydrogenation of various fatty acid methyl esters by organic hydrogen donors. Tagawa, Tomohiko; Nishiguchi, Takeshi; Fukuzumi, Kazuo (Fac. Eng., Nagoya Univ., Nagoya, Japan). Yukagaku, 27(2), 70-5 (English) 1978. CODEN: YKGKAM. ISSN: 0513-398X. DOCUMENT TYPE: Journal CA Section: 45 (Fats and Waxes) Section cross-reference(s): 23 The redn. of Me trans-9,trans-12-octadecadienoate (I) [2566-97-4], conjugated Me octadienoates (dienes), Me oleate [112-62-9], Me elaidate [1937-62-8], and Me linoleate [112-63-0] by H transfer from org. compds. was examd. in the presence of homogeneous catalysts. The H transfer systems were divided into 2 groups. With the group comprising indoline [496-15-1]-(NH4)2PbCl4, indoline-PbCl2, and iso-PrOH [67-63-0]-RuCl2(PPh3)3 [15529-49-4], the reactivity decreased in the order alkali conjugated dienes > linoleate > I; the selectivity to monoenes was complete in the reaction of dienes; oleate and elaidate were not reduced; and the rate of cis-trans isomerization was much slower than that of the redn. of dienes. With the group indoline-RuCl2(PPh3)3, glucose [50-99-7]-RuCl2(PPh3)3, and RuH2(PPh3)4 [19529-00-1], the reactivity of I was higher than that of linoleate and was similar to that of the conjugated dienes; the rate of isomerization was fast; cis-trans equil. of monoenes was reached; the position of the equil. was varied by H donors; and, in most cases, the selectivity to monoenes was incomplete and monoenes were also reduced.

Autoxidation of polyunsaturated fatty acids, an expanded mechanistic study

Autoxidation of polyunsaturated fatty acids, an expanded mechanistic study. Porter, Ned A.; Wujek, Dennis G. (P. M. Gross Chem. Lab., Duke Univ., Durham, NC 27706, USA). J. Am. Chem. Soc., 106(9), 2626-9 (English) 1984. CODEN: JACSAT. ISSN: 0002-7863. DOCUMENT TYPE: Journal CA Section: 22 (Physical Organic Chemistry) Autoxidn. of Me (9-Z,12-Z)-, (9-Z,12-E)-, (9-E,12-Z)-, and (9-E,12-E)-octadecadienoate was examd. in benzene/1,4-cyclohexadiene. 112-63-0 and 2566-97-4 are cas registry numbers of chemicals which are used as reagents here. With no cyclohexadiene or with low cyclohexadiene solvent compn., the distribution of product hydroperoxides from all 4 isomers was equiv. or nearly so. With higher cyclohexadiene solvent compn., the product mixts. became nonequiv. and reflected the stereochem. of the particular diene precursor. A steady-state and iterative computer kinetic anal. is reported, and a scheme for diene fatty acid autoxidn. involving reversible oxygen addn. to intermediate pentadienyl radicals is proposed. .