Carbon-13 magnetic resonance of hydroaromatics. II. Conformation of Tetralin and tetrahydroanthracene and their methyl derivatives
作者:Frederick G. Morin、W. James Horton、David M. Grant、Don K. Dalling、Ronald J. Pugmire
DOI:10.1021/ja00350a042
日期:1983.6
Carbon-13 chemical shift data have been acquired for 36 methylated tetralins and tetrahydroanthracenes. A least-squares regression analysis has been undertaken on the ring carbons of compounds of unequivocal conformation to determine methyl substituent parameters for the two distinct aliphatic positions and the results have been used to estimate the position of equilibrium of conformationally mobile
Stereochemistry of the intramolecular cyclization products of methyl 2-bromo-5-(4-hydroxyphenyl)hexanoate: Synthesis of trans- and cis-1,4-dimethyltetralin.
The stereochemistry of the spirodienones (2) obtained by the intramolecular cyclization of methyl 2-bromo-5-(4-hydroxyphenyl) hexanoate (1) was established by carbon-13 nuclear magnetic resonance spectral analysis and chemical transformation to trans- and cis-1, 4-dimethyltetralins (6).