Results 241 to 250 of about 44,043 (291)

ChemInform Abstract: 5‐(Trimethylstannyl)‐2H‐pyran‐2‐one and 3‐(Trimethylstannyl)‐2H‐pyran‐ 2‐one: New 2H‐Pyran‐2‐one Synthons.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Z. LIU, J. MEINWALD
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MO study of 2,2,4-trimethyl-2H-pyran, the simplest stable 2H-pyran derivative

Collection of Czechoslovak Chemical Communications, 1987
On the basis of MNDO optimized molecular geometries of the title compound I and its acyclic valence tautomers II and III it is demonstrated that the ability to isolate heterocyclic form I can be interpreted by its relatively lowest SCF-molecular energy calculated in MNDO or 4-31G, resp., orbital bases.
Stanislav Böhm, Josef Kuthan
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Pyrans, Thiopyrans, and Selenopyrans

1983
Publisher Summary This chapter presents the literature for pyrans, thiopyrans, and selenopyrans. Pyran structure refers to a six-membered ring possessing one oxygen, sulfur, selenium, or telurium heteroatom singly bonded in a cyclic system of two double bonds and one tetrahedral atomic center.
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Pyran derivatives

Il Farmaco, 2003
Mario Di Braccio, Giancarlo Grossi, Giorgio Roma, Cristina Marzano, Franca Baccichetti, Morena Simonato, Franco Bordin   +6 more
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Investigation of positron scattering from 2H-pyran, 4H-pyran, and pyrrole molecules

Journal of Physics B: Atomic, Molecular and Optical Physics
Abstract The scattering cross-sections for positron-biomolecule interaction are an essential input for the Monte-Carlo simulation techniques. In the present work, we have reported the elastic integral, differential, momentum transfer, and total ionization cross-sections for scattering of positron from 2H-pyran, 4H-pyran, and pyrrole ...
Snigdha Sharma, Dhanoj Gupta
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Aroxydihydro pyrans

Chemistry of Heterocyclic Compounds, 1970
G. G. Skvortsova, V. G. Kozyrev
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Borate–pyran lean electrolyte-based Li-metal batteries with minimal Li corrosion

Nature Energy, 2023
Yun-Jung Kim
exaly  

Immunopharmacology of pyran copolymer

Pharmacological Research Communications, 1978
P, Puccetti, A, Giampietri
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pyran, n.

2023
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Pyrans and Fused Pyrans: (i) Structure

1984
P.J. Brogden, C.D. Gabbutt, J.D. Hepworth   +2 more
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