Category: 18729-20-9

Eliel, Ernest L.; Pietrusiewicz, K. Michal published the artcile< Conformational analysis. Part XLI. Oxanes>, Category: esters-buliding-blocks, the main research area is conformation oxane; pyran tetrahydro conformation.

Conformational free energies for various substituents in 3-substituted oxanes (tetrahydropyrans) were determined by low-temperature 13C NMR spectroscopy and compared with corresponding values in 5-substituted 1,3-dioxanes and in cyclohexanes. Also determined was the value for MeO in 4-methoxyoxane and the value for CHO in cyclohexanecarboxaldehyde.

Polish Journal of Chemistry published new progress about Free energy. 18729-20-9 belongs to class esters-buliding-blocks, and the molecular formula is C7H12O3, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Eliel, Ernest L.; Pietrusiewicz, K. Michal published the artcile< Conformational analysis. Part XLI. Oxanes>, Category: esters-buliding-blocks, the main research area is conformation oxane; pyran tetrahydro conformation.

Conformational free energies for various substituents in 3-substituted oxanes (tetrahydropyrans) were determined by low-temperature 13C NMR spectroscopy and compared with corresponding values in 5-substituted 1,3-dioxanes and in cyclohexanes. Also determined was the value for MeO in 4-methoxyoxane and the value for CHO in cyclohexanecarboxaldehyde.

Polish Journal of Chemistry published new progress about Free energy. 18729-20-9 belongs to class esters-buliding-blocks, and the molecular formula is C7H12O3, Category: esters-buliding-blocks.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Baldwin, Jack E.; Reiss, James A. published the artcile< Preference for 6-exo-trigonal closures of ω-hydroxy-αβ-unsaturated esters>, Formula: C7H12O3, the main research area is ester hydroxy unsaturated cyclization; valerate hydroxy methylene cyclization; lactonization hydroxmethylenevalerate.

Treatment of HO(CH2)3C(CO2Me):CH2 (I) with base, e.g. NaH, NaOMe, or KOCMe3, caused slow cyclization to give the lactone II. II is formed by a 6-Exo-Trig process which is a faster reaction than the alternative 6-Endo-Trig mode of ring closure. The slow reaction of I was due to its isomerization to the s-trans conformation in which the 6-Exo-Trig closure was sterically improbable.

Journal of the Chemical Society, Chemical Communications published new progress about Cyclization. 18729-20-9 belongs to class esters-buliding-blocks, and the molecular formula is C7H12O3, Formula: C7H12O3.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Pandey, Karuna Shanker; Shriprakash; Pandey, Mamta; Rao, Karumuru Mallikarjuna; Vaidyanathaswamy, Ramamoorthy published the artcile< Synthesis and resolution of tetrahydropyran carboxylic acids and the bioevaluation of their esters as cockroach attractants>, Name: Methyl tetrahydro-2H-pyran-3-carboxylate, the main research area is tetrahydropyrancarboxylate attractant cockroach.

Tetrahydropyran-2- and 3-carboxylic acids were resolved by using quinine. The enantiomeric purity of the corresponding Me esters (I and II) was determined by proton NMR, using a lanthanide chiral shift reagent [Eu(hfc)3] in the ratio 1:3 (substrate/shift reagent). The relative attractant activity of the racemic, and (+) and (-) isomers of these esters was evaluated against Blattella germanica (L.) and Supella longipalpa (F.). The results show that the activity order for I was (-) > (+) > racemic, and for II was (+) > (-) > racemic.

Bioscience, Biotechnology, and Biochemistry published new progress about Blattella germanica. 18729-20-9 belongs to class esters-buliding-blocks, and the molecular formula is C7H12O3, Name: Methyl tetrahydro-2H-pyran-3-carboxylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics