The geometry of displacements at nonstereogenic atoms: the formal displacement of alkoxide from alkoxyamines by organolithium reagents
作者:Peter. Beak、Anwer. Basha、Bruce. Kokko、DeKai. Loo
DOI:10.1021/ja00279a058
日期:1986.9
the geometry of reactions at nonstereogenic centers. W e have contributed to methodology for the amination of Scheme I" organolithium compounds by development of methyllithiummethoxyamine as a usefulreagent.'-3 The original reaction, ( I ) 2CH+2CH@NH2 R L i ( 2 ) H@ (3) C.&f2OCl RNHCOC6HS discovered by Sheverdina and Kocheshkov for the conversion of "R = C2H5 (78%), n-C4H9 (71%, 77%*), sec-C4H9 (71%)
Regioselective, Directed Meta Acylation of Aromatic Compounds
作者:Shuji Akai、Andrew J. Peat、Stephen L. Buchwald
DOI:10.1021/ja981508t
日期:1998.9.1
A new method for the directed meta acylation of aromaticcompounds is described. This method involves an ortho lithiation procedure combined with zirconocene−benzyne chemistry. 3-Acyl-1-substituted benzene derivatives were obtained by acidic hydrolysis of the azazirconacycle intermediate which results from the coupling of a nitrile with a zirconocene−benzyne complex. Similarly, 3-acyl-2-iodo-1-substituted