17879-35-5Relevant academic research and scientific papers
Molecular Chirality and Cloud Activation Potentials of Dimeric α-Pinene Oxidation Products
Bé, Ariana Gray,Bellcross, Aleia,Geiger, Franz M.,Thomson, Regan J.
supporting information, p. 16653 - 16662 (2021/10/20)
The surface activity of ten atmospherically relevant α-pinene-derived dimers having varying terminal functional groups and backbone stereochemistry is reported. We find ~10% differences in surface activity between diastereomers of the same dimer, demonstrating that surface activity depends upon backbone stereochemistry. Octanol-water (KOW) and octanol-ammonium sulfate partitioning coefficient (KOAS) measurements of our standards align well with the surface activity measurements, with the more surface-active dimers exhibiting increased hydrophobicity. Our findings establish a link between molecular chirality and cloud activation potential of secondary organic aerosol particles. Given the diurnal variations in enantiomeric excess of biogenic emissions, possible contributions of such a link to biosphere:atmosphere feedbacks as well as aerosol particle viscosity and phase separation are discussed.
Synthesis of Isonicotinic and Salicylic Acids Derivatives from (–)-α-Pinene and (+)-Δ3-Carene
Garifullina, L. R.,Ishmuratov, G. Yu.,Myasoedova, Yu. V.,Nurieva, E. R.
, p. 2038 - 2042 (2020/12/23)
Abstract: Optically active cyclobutanediyl- and cyclopropanediylbisalkylidenedihydrazides of isonicotinic and salicylic acids were synthesized when theperoxide products of ozonolysis of (–)-α-pinene and(+)-Δ3-carene were reduced with isonicotin
Transformations of Peroxide Ozonolysis Products of (–)-α-Pinene and (+)-3-Carene by the Action of 4-Hydroxybenzohydrazide
Garifullina, L. R.,Ishmuratov, G. Yu.,Myasoedova, Yu. V.,Nurieva, E. R.
, p. 1673 - 1676 (2020/10/22)
Abstract: Treatment of peroxide ozonolysis products of the bicyclic monoterpenes (–)-α-pinene and (+)-3-carene with 4-hydroxybenzohydrazide in methylene chloride or tetrahydrofuran gave the corresponding keto acids, whereas keto esters were formed in methanol.
Synthesis of optically active macrolides bearing di- and triethylene glycol and dicarboxylic acid hydrazide moieties from (-)-α-pinene
Yakovleva,Mingaleeva,Denisova,Ishmuratov, G. Yu.
, p. 1445 - 1450 (2019/08/12)
Six optically active macroheterocycles bearing ester and dihydrazide moieties were synthesized from available natural (-)-α-pinene through the intermediate keto acid, (31R,33R)- 1-hydroxy-32,32-dimethyl-1,4-dioxopentaphane, using the [2+1] reaction of this keto acid with di- or triethylene glycols and the [1+1] condensation of the resulting α,ω-diketo diesters with dicarboxylic acid dihydrazides in the key steps.
Transformations of (-)-α-pinene peroxide ozonolysis products by hydrazines of HCL and H2SO4
Legostaeva, Yu. V.,Garifullina,Nazarov,Kravchenko,Ishmuratov, G. Yu.
, p. 1020 - 1022 (2018/03/21)
The reactivities of hydrazines of HCl and H2SO4 for (-)-α-pinene peroxide ozonolysis products were studied. It was shown that these reagents were less effective and selective than semicarbazide hydrochloride for transformations into cis-pinonic acid and its esters.
Transformation of peroxide products of olefin ozonolysis under treatment with hydroxylamine and semicarbazide hydrochlorides in acetic acid
Ishmuratov,Legostaeva,Garifullina,Botsman,Muslukhov,Tolstikov
, p. 1075 - 1081 (2015/02/02)
Hydrochlorides of hydroxylamine and semicarbazide efficiently reduce peroxide products of olefin ozonolysis in a system CH2Cl2-AcOH leading to the formation of carboxylic acids and their derivatives. The application of water as the solvent component favors the increase in the fraction of nitrogen-containing organic compounds (semicarbazones, keto- and aldoximes, nitriles) and reduction in the yield of carboxylic acids.
Transformations of peroxide products of olefin ozonolysis in tetrahydrofuran in reactions with hydroxylamine and semicarbazide hydrochlorides
Ishmuratov,Legostaeva,Garifullina,Botsman,Muslukhov,Ishmuratova,Tolstikov
, p. 928 - 933 (2014/10/15)
Treatment with hydroxylamine and semicarbazide hydrochlorides of peroxide products obtained by ozonolysis of olefins in tetrahydrofuran gives mainly carboxylic acids and their derivatives.
2-Azapinanes: Aza Analogues of the Enantiomeric Pinyl Carbocation Intermediates in Pinene Biosynthesis
Faraldos, Juan A.,Kariuki, Benson M.,Coates, Robert M.
supporting information; scheme or table, p. 836 - 839 (2011/04/26)
The enantiomeric 2-azapinanes, aza analogues of the pinyl carbocation intermediates in pinene biosynthesis, were synthesized from (-)-and (+)-cis-pinonic acids. The individual reactions in the 5-step sequence were Beckmann rearrangement of the pinonic acid oximes, cyclization to the N-acetyl lactams, hydrolysis to the NH-lactams, N-methylations, and LiAlH4 reductions. The anti stereochemistry of the N-methyl groups in the salts with respect to the gem-dimethyl bridge was established by NOE measurements and by X-ray diffraction analysis.(Figure Presented)
Tetrapropylammonium perruthenate catalyzed glycol cleavage to carboxylic (Di)acids
Schmidt, Andrea-Katharina C.,Stark, Christian B. W.
supporting information; experimental part, p. 5788 - 5791 (2011/12/05)
A new method to accomplish glycol cleavage to carboxylic (di)acids in one step using catalytic amounts of tetrapropylammonium perruthenate (TPAP) together with N-methylmorpholine N-Oxide (NMO) as the stoichiometric oxidant is presented. In addition to regenerating the active catalyst, the N-oxide stabilizes intermediary carbonyl hydrates and thereby shifts a crucial equilibrium. The mild oxidation protocol is applicable to a broad range of substrates providing the respective acids, diacids, or keto acids in high yields.
Efficient synthesis of chiral Δ2-1,3,4-thiadiazolines from α-pinene and verbenone
Sarmiento, Gabriela P.,Rouge, Pablo D.,Fabian, Lucas,Vega, Daniel,Ortuno, Rosa M.,Moltrasio, Graciela Y.,Moglioni, Albertina G.
scheme or table, p. 1924 - 1929 (2012/01/13)
The synthesis of chiral cyclobutane 1,3,4-thiadiazoline derivatives starting from (-)-α-pinene and (-)-verbenone was studied. The diastereoisomeric excesses of the products obtained depended strongly upon the starting chiral ketone. The stereochemical assignments of the synthesized compounds were performed by NMR spectroscopy, X-ray analysis, and theoretical calculations.
