Electric Literature of 19752-84-2, Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology.19752-84-2, Name is Tetrahydro-2H-pyran-3-ol, molecular formula is C5H10O2. In a patent, introducing its new discovery.
Determination of the gauche effect of 3-acetamido- and 3-acetoxy-piperidine and -tetrahydropyran by 1H-n.m.r. spectroscopy
The A-values of the acetamido and the acetoxy group were determined by low-temperature 1H-n.m.r. spectroscopy.The limiting values for the relevant vicinal coupling constants of the newly prepared trans- (22) and cis-5-acetoxy-2-(1-hydroxy-1-methylethyl)tetrahydropyran (24) were obtained at room temperature.The attractive gauche effect of AcNH-3 and AcO-3 in piperidines, piperidinium trifluoroacetates, and tetrahydropyrans was investigated by 1H-n.m.r. spectroscopy both at low temperature (integrals) and at room temperature (band widths and coupling constants).The results obtained at low temperature are more reliable.The position of the conformational equilibrium of N-(3-piperidyl)acetamide (11), N-(1-methyl-3-piperidyl)acetamide (12), and N-(tetrahydropyran-3-yl)acetamide (17)
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Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics