Adducts of Tröger bases and activated acetylenes: synthesis and structure

It was found by X-ray diffraction and NMR studies that the structure of the adduct of bis-ortho-methyl-bis-para-methyl substituted Tröger base and dimethyl acetylenedicarboxylate is a [3.3.1]bicyclic compound corresponding to the methyl 13-[1-(methoxycarbonyl)vinyl]-13-carboxylate. Chemical and NMR evidence supported similar structures for all other reported adducts of Tröger bases and activated acetylenes.     

Mass spectrometry of organic compounds of the group V elements. IV—new data on amines,phosphines, arsines and the corresponding acyl derivatives

Further investigations have given new data confirming differences in fragmentation under electrol impact of compounds of trivalent nitrogen and other group V elements. These data have been obtained by comparision of the fragmentation of the amines, phosphines, arsines, benzyl derivatives, geminal systems and acyl derivatives. Mass spectra of tetraethyl derivatives of the group IV elements and acetyl triethyl germane have also been taken and compared with the previous ones.