Absolute configuration of substituted trifluoromethylcarbinols

Reactions of nitropolymethylbiphenyls

“…However, purities were higher than 99% with the exception of compounds XXIX (97.6%), XXX (93.0%), and XXXI (94.5%) based on gas chromatographic analyses. 6 Nmr spectra confirmed the hydroxypolymethylbiphenyl structures and eliminated the possibility of isomericbenzyl alcohols. ® Confirmed by mass spectrometry.…”

On the relation between elution order and absolute stereochemistry of alkylarylcarbinols from a Pirkle column

“…14a, X = H 15a, Ar = 1-naphthyl b, X-COCH3 b, Ar = 9-anthranyl 16 17, = 1 or 2 c, Ar = 9-( 10-CH3 )-anthranyl tiomer preferentially retained (second peak) by the column was that given by 14a.…”

Electrochemistry of some tetradehydro[18]annulenediones

“…They confirm the structures of these diketones and give no indication of any appreciable ring current. The relative structural assignments of 11 and 12 follow unequivocally from the correspondence of the electronic spectrum of 11 with that of 611 and of 12 with that of 7. The assignments of 11 and 12 are confirmed by their colors and relative solubilities, and the correspondence of the ir spectra in several respects with those of 6 and 7, respectively.…”

“…dJ = 12 Hz. 6 The spectrum of 12 in CDCla was not determined, due to its low solubility in this solvent. crystals,7•10 eluted before 4).…”

“…(11) For comparison with 7, 11, and 12, the electronic spectrum of 6 was determined in chloroform: Xmax 277 (e 16,800), 296 (22,900), 315 (31,200), 336 (30,200), 464 nm (3000), with absorption >550 nm. (12) See A. S. Hay, J. Org.…”