✍ Scribed by D. Rusińska-Roszak; M. Łożyński
No coin nor oath required. For personal study only.
2‐Hydroxy‐5‐methylbenzophenone (E) and (Z) oximes and 5,8‐diethyl‐7‐hydroxy‐6‐dodecanone (E) and (Z) oximes have been treated with N,O‐bis(trimethylsilyl)acetamide (BSA) to give di‐(trimethylsilyl) derivatives. The GLC data and the combined GC‐MS analysis of derivatized oximes are presented. Di‐(trimethylsilyl) derivatives of (E) and (Z) isomers of hydroxyaromatic oximes retain the configuration of starting hydroxyoxime. The (Z) oxime of aliphatic alpha‐hydroxy‐ketone gives di‐TMS derivative of changed configuration.
📜 SIMILAR VOLUMES
The crystal structure of norpropoxyphene maleate is presented. The conformation is discussed in relation to similar compounds. A gas chromatographic-mass spectrometric investigation indicates that earlier proposed metabolites may be formed during the gas chromatographic separation.
A novel algorithm is described for the improved estimation of isotopomer ratios from gas chromatographic/mass spectrometric data. The minor isotopomer peak proÐle is Ðtted to an admixture of the major proÐle and its Ðrst and second derivatives. By this means allowance is made for non-coincidence in