Abietic acid nitration

Dinitroabietic Acids. The dinitro compd of the formula (OaN)a C19Ha7.COOH, mp 178— 184°, reported to be obtained by Johansson on nitrating abietic acid (Refs 1 2),could not be identified as dinitroabietic acid by later investigators. Goldblatt et al(Refs 3 ... 

COOH, ndls decomposng at 178—185°, by nitrating dehydro abietic acid, Ci9Ha7.COOH, with fuming nitric or mixed nitric sulfuric acid. This compd was identified as 6,8-dinitrodebydroabietic or pyroabietic acid and had the same props as comp reported by Jo--hansson as dinitroabietic acid... 

Nitration of abietic acid was reported in 1904 [66]. Johansson [67] was the first to describe a crystalline nitro-derivative which he considered to be dinitro-abietic acid of the formula CI9H27(N02)2C00H, m.p. 178-184°C (see also [68]). Later reports by Dubourg [69], Goldblatt et al. [70] described the nitration in nitric acid (d = 1.42) in presence of acetic add to form dinitroabietic add C,8H2j(N02)2C00H of m.p. 171°C (yield 33%). 

A trinitroabietic acid, C15HI6(N02)3C00H, m. p. 156-158°C, was also obtained by Dubourg. He also prepared polynitroabietic add by nitration of abietic acid with hot anhydrous nitric add. 

Pentryl. See 2-(2, 4, 6-Trinitro-N-nitranilino Ethanol Nitrate under Anilinoethanol and Derivatives A425-L to A429-R Pentryl Homologs A429-R Peracetic Acid, Benzylester. See.Acetyl-benzylperoxide A55-L Phenacyl Azide. See a>-Azidoacetophenone under Acetophenone A47-R Phenazone. See Antipyrine A471-R Phenetidine. See Aminophenetole A240-R Phenyl Abietate. See under Abietic Acid A4-L... 

Hydrogenated methyl abietate n. C19H31COOCH3. A derivative of Abietic acid, which is extracted from pine rosin, used as a plasticizer for cellulose nitrate, ethyl cellulose, acrylic and vinyl resins, and polystyrene. 

The lOO.OOOg supernatant obtained from the extract showed a diterpene cyciase activity. The resulting olefinic product was identified by radio-GLC and argentation liquid chromatography. This compound has the same retention time on GC, as weli as on silice-sllver nitrate column, as 7,13-abietadiene (standard marker synthesized by reduction of abietic acid). 

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