One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 56786-63-1, Name is (2AR,2’R,4S,5’R,6aR,6bS,8aS,8bR,9S,11aS,12aS,12bS)-2a,4-dihydroxy-5′,6a,8a,9-tetramethylicosahydrospiro[naphtho[2′,1′:4,5]indeno[2,1-b]furan-10,2′-pyran]-2(11aH)-one, formurla is C27H42O5. In a document, author is Suarez, D, introducing its new discovery. Application In Synthesis of (2AR,2’R,4S,5’R,6aR,6bS,8aS,8bR,9S,11aS,12aS,12bS)-2a,4-dihydroxy-5′,6a,8a,9-tetramethylicosahydrospiro[naphtho[2′,1′:4,5]indeno[2,1-b]furan-10,2′-pyran]-2(11aH)-one.
Anomeric effect in 1,3-dioxole: A theoretical study
A theoretical analysis on planar and puckered-ring conformations of cyclopentadiene, 2,3-dihydrofuran, and 1,3-dioxole is carried out to test the conclusion of Laane and co-workers (J. Am. Chem. Soc. 1993, 115, 12132) that the unexpected nonplanarity of 1,3-dioxole must be attributed to the anomeric effect. MP4/6-31G**/IMP2/6-31G** calculations and NBO analysis show that delocalization involving the oxygen lone pairs and the C-O antibonding orbital, commonly associated with the anomeric effect, plays a decisive role in explaining the above-mentioned experimental fact. A careful analysis of the dipole-dipole interaction energy indicates that, in the present case, the electrostatic theory does not help to rationalize the experimentally observed puckered-ring conformation of 1,3-dioxole.
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Reference:
1,3-Benzodioxole – Wikipedia,
,Dioxole | C3H4O2 – PubChem