1,2-Hydrogen migration and alkene formation in the photoexcited states of alkylphenyldiazomethanes
作者:Sol Celebi、Soccoro Leyva、David A. Modarelli、Matthew S. Platz
DOI:10.1021/ja00072a014
日期:1993.9
Laser flash photolysis of alkylphenyldiazomethanes in the presence of pyridine produces easily detected ylides. The data indicate that photolysis of alkylphenyldiazomethanes leads to both carbene formation and direct formation of rearrangement products which do not derive from relaxed carbene intermediates
Conversions of hydrazones to diazo compounds by n-butyllithium and azidotris(diethylamino)phosphonium bromide
作者:Mark McGuiness、Harold Shechter
DOI:10.1016/s0040-4039(02)01443-0
日期:2002.11
Lithium hydrazonides, prepared by reactions of hydrazones with n-BuLi/hexane in THF at −78°C, are converted by azidotris(diethylamino)phosphonium bromide in THF at ∼0°C efficiently, rapidly, and safely to their corresponding diazo compounds along with tris(diethylamino)phosphorimine, nitrogen, and lithium bromide.