Regio- and stereoselective addition of organolithiums to naphthalenes. an efficient synthesis of 11,2-trisubstituted and trans-2-disubstituted dihydronaphthalenes
作者:A.I. Meyers、Kathryn A. Lutomski、Dominique Laucher
DOI:10.1016/s0040-4020(01)85942-1
日期:1988.1
The addition of a variety of organolithium reagents to 1-napththyloxazolines and 2-naphthyloxazolines followed by trapping with electrophiles leads to high yields of the title compounds. Very high stereoselectivity characterizes the present process in that the electrophile enters from the naphthalene face opposite to the entry of the organolithium reagent. A number of organolithiums have been investigated
Successive addition of two different Grignard reagents to nitriles: access to α,α-disubstituted propargylamine derivatives
作者:Julien Caillé、Fatma Boukattaya、Fabien Boeda、Morwenna S. M. Pearson-Long、Houcine Ammar、Philippe Bertus
DOI:10.1039/c7ob03047a
日期:——
The successive addition of two different Grignardreagents to acyl cyanohydrins was performed with success by taking advantage of the low reactivity of alkynyl Grignardreagents. The experimental conditions were adjusted so that they were not reactive during the first addition step, but reactive only in the second one. The synthetic utility of the prepared compounds was validated by the preparation