Regio- and Stereoselective Hydroamination of Alkynes Using an Ammonia Surrogate: Synthesis of <i>N</i>-Silylenamines as Reactive Synthons
作者:Erica K. J. Lui、Jason W. Brandt、Laurel L. Schafer
DOI:10.1021/jacs.7b13783
日期:2018.4.18
An anti-Markovnikov selective hydroamination of alkynes with N-silylamines to afford N-silylenamines is reported. The reaction is catalyzed by a bis(amidate)bis(amido)Ti(IV) catalyst and is compatible with a variety of terminal and internal alkynes. Stoichiometric mechanistic studies were also performed. This method easily affords interesting N-silylenamine synthons in good to excellent yields and
Phenethylamines via Heck arylation of a new vinylamine equivalent
作者:Carl A. Busacca、Robert E. Johnson、John Swestock
DOI:10.1021/jo00064a015
日期:1993.6
A new vinylamine equivalent, N-vinyloxazolone 3, has been prepared in three steps and shown to undergo Heck arylation with a variety of substrates. The Heck adducts thus obtained are then converted in one step and high yield to phenethylamine hydrochlorides. As a general synthetic method for preparation of substituted phenethylamines, use of this new reagent is shown to be superior to N-vinylphthalimide in number of steps, regiospecificity, and chemical yield.