Heavy stuff: A triethylamine‐mediated H–D exchange reaction for the conversion of unlabeled alkynes (1) into [D1]alkynes ([D1]‐1) in a mixture of D2O/THF has been developed. Furthermore, the efficient preparation of site‐ and regioselectively deuterated alkenes ([Dn]‐2) from 1 or [D1]‐1 with palladium on boron nitride (Pd/BN) as the catalyst and gaseous H2 or D2 is discussed. The resulting deuterated
Stereoselective palladium-catalyzed synthesis of (Z)-trimethyl(2-arylethenyl)silanes by arylation of (E)-1,2-bis(trimethylsilyl)ethylene. Effects of added halides compared to silver salts
作者:Kostas Karabelas、Anders Hallberg
DOI:10.1021/jo00268a058
日期:1989.3
On the electron impact induced hydroxyl loss fromo-nitrostyrene
作者:Gisbert Depke、Walter Klose、Helmut Schwarz、Wolfgang Blum、Wilhelm J. Richter
DOI:10.1002/oms.1210181214
日期:1983.12
AbstractUnimolecular hydroxyl (OD˙) loss from regio‐ and stereo‐specifically labelled o‐nitrostyrenes 1a, 1c and 1d results in the formation of an ion which upon collisional activation gives identical mass spectra. Suggestions are made which aim at explaining: (i) the loss of stereochemical integrity of the diastereotopic methylene hydrogens in the course of hydroxyl elimination; and (ii) to account for the collision induced losses of CO and HNC from the [M—hydroxyl]+ ion.
DOHNER B. R.; SAUNDERS W. H., JR., CAN. J. CHEM., 64,(1986) N 6, 1026-1030