Open-tubular gas chromatographic analysis was carried out on fatty acids from the total lipids from each of 3 species of the Chlorophyta (I), and Rhodophyta (II), and 6 speices of Phaeophyta (III). The specific features of polyenoic acids in each class were relatively high percentages of 16 : 3 (n-3) (2.27.8%) and 16 : 4 (n-3) (16.217.7%) in I, 20 : 4 (n-6) (60%) or 20 : 5 (n-3) (51%) in II, and one or more of 18 : 3 (n-3), 18 : 4 (n-3), 20 : 4 (n-6), and 20 : 5 (n-3) in III. The percentage of 20 : 4 (n-6) in total lipids from Garcilaria verrucosa was noticeably as high as 60% of the total acids, and 91% of the total polyenoic acids. The algae belong to II are expected to be the source for 20 : 4 (n-6) and 20 : 5 (n-3). The 18 : 1 (n-7) /18 : 1 (n-9) ratios were generally high in I, and extremely low in III.

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Enthalpies of solution of four triacylglycerols (triglycerides) in trichloromethane and in benzene were measured calorimetrically at infinite dilution at 298.15K. All compounds dissolve in both solvents endothermally. In order to compare their enthalpy-of-solution values with those of methyl alkanoates, the observed values were transformed into those at the hypothetical liquid state at 298.15K, by the use of molar enthalpies of fusion and molar heat capacities reported by Charbonnet and Singleton. In the course of evaluation of the enthalpies of fusion at 298.15K, although large uncertainites may be introduced into them, the results show that triglycerides dissolve in trichloromethane with evolution of heat, while they dissolve in benzene with absorption of heat. Comparing the enthalpies of solution of the liquid triglycerides with those of methyl alkanoates and with those of soybean oil, it can be concluded that in trichloromethane solutions trilaurin, trimyristin, and tripalmitin molecules take an asteroid conformation, while tristearin molecule has a conformation in which only end groups of three acyl groups apart one another and their roots are in a bundled state. In benzene solutions, on the contrary, three acyl groups of each triglyceride molecule are all bundled, and only outer surface of the bundled acyl groups can contact with the solvent molecules.

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Oils and fats of high polyenoic acids were found to have low recovery when the TLC·FID method was used to determine the triglyceride composition. Results of the hydrogenation-oxidation and direct oxidation methods for pretreatment of oils and fats were compared.
1) Linoleate decreased to less than 20% by selective hydrogenation using a 2% Cu-Cr-Mn catalyst at an H₂ pressure of 00.1kg/cm², and an H₂ flow rate 10ml/g. min for 12 hours at 220°C. There was no increase in the saturated fatty acid content.
2) Oxidation of hydrogenated oils gave multiple peaks on the TLC·FID chromatogram and triglyceride recovery was more quantitative than the oxidation of unhydrogenated oils. However, the calculated composition of triglyceride from the analytical data of the hydrogenated and unhydrogenated oils was almost same.
3) The triglyceride composition of corn oil, rapeseed oil and the like were determined by the TLC·FID method with the oxidation of both oils.

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Cotelomers of 4-vinylpyridine (VP) and methyl acrylate (MA) prepared in a telogen of 1-dodecanethiol (LSH) or 1-dodecanol (LOH) were characterized. Ls-VP-MA accounting for 6.110.9 of the degree of polymerization (P_n) was a brown viscous liquid. The ratio of LSH to monomers (VP+MA) in the feed (β) was proportional to 1/P_n. A plot of MA to VP (α) vs. the chain-transfer constant (C_s) gave a straight line from which the following formula (1) was derived.
1/P_n= {4.6×10^-1/ (1+α) +8.4×10^-2} β+2.5α×10^-3+7.6×10^-2 (1)
The monomer composition of Ls-VP-MA was not effected by β, and the reactivity ratios of rVP and rMA calculated using the Fineman-Ross equations were 1.9 and 0.25, respectively. Lo-VP-MA prepared at 70°C was a yellow precipitate and 85211 of P_n, and that prepared at 175°C was a brown precipitate and 1244 of P_n. An approximately linear relationship was found between β and 1/P_n and the following equation was consequently derived.
1/Pn= {5.3×10^-3/ (1+α) +7.8×10^-4} β+4.5α×10^-3-5.0×10^-3 (2)
The monomer-cotelomer composition curve for Lo-VP-MA was similar to that of Ls-VP-MA. The reactivity ratios of rVP and rMA were 2.1 and 0.23, respectively. The reciprocal of Pn of Ls-VP-St (styrene) and Lo-VP-VAc (vinyl acetate) increased with β, and their reactivity ratios were essentially the same as those for the copolymerization of VP-St or VP-VAc.

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Oxygenation of cadalene and eudalene in DMSO or DMF at 120°C for 30h yielded the corresponding naphthalenemethanols, aldehydes, and a ketone by the consecutive oxidation of the side chains, along with minor amount of unique naphthoquinone derivatives by oxidation of the nucleus.

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A mixture of isomers of methyl linoleate hydroperoxides was isolated from autoxidized methyl linoleate by silicic acid column chromatography. Hydroperoxides were further fractionated into their isomers by dry column chromatography on a silica gel column. Two of the four isomers, i.e., methyl 13-hydroperoxy-cis-9, trans-11-octadecadienoate and methyl 9-hydroperoxy-trans-10, trans-12-octa-decadienoate, could be isolated at 98% and 92% purity respectively, while that of the other two isomers was each about 85% following rechromatography on a dry column. This method is suitable for preparation of these two isomers in large amounts.

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The isomerization reaction of d-limonene-1, 2-epoxide (1) with activated carbon catalyst was found to give the following products : p-cymene (2), dihydrocarvone (3), carvenone (4) and carvacrol (5). (4) was obtained selectively as the principal component from (1) in a yield of 84.2%. The formation of (5) from (1) proceeded through the successive reactions, (1) → (3) → (4) → (5).

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