Tertiary amine synthesis via reductive coupling of amides with Grignard reagents
作者:Lan-Gui Xie、Darren J. Dixon
DOI:10.1039/c7sc03613b
日期:——
reductive coupling reaction of Grignard reagents and tertiary amides affording functionalised tertiary amine products via an efficient and technically-simple one-pot, two-stage experimental protocol, is reported. The reaction – which can be carried out on gram-scale using as little as 1 mol% Vaska's complex [IrCl(CO)(PPh3)2] and TMDS as the terminal reductant for the initial reductive activation step –
Metallation of benzylic amines via amine-borane complexes
作者:Mark R. Ebden、Nigel S. Simpkins、David N.A. Fox
DOI:10.1016/s0040-4020(98)00783-2
日期:1998.10
Formation of borane complexes of N, N-dimethylbenzylamine, N,N-dimethyl(1-naphthyl)methylamine, N,N-dimethyl(2-naphthyl)methylamine, N-methyltetrahydroisoquinoline and N-methylisoindoline facilitates regioselective metallation of these systems using BuLi, giving intermediate benzylic anions which react with a range of electrophiles to give products in good yield.
Generation and Reactivity of α-Amino-Substituted Arylmethyllithium Organometallics
作者:Ugo Azzena、Luciano Pilo、Elisabetta Piras
DOI:10.1016/s0040-4020(00)00303-3
日期:2000.6
Reductive cleavage of open chain and cyclic α-N,N-dialkylamino-substituted benzyl alkyl ethers 1a–f with a dispersion of Li metal and a catalytic amount of naphthalene in THF, allowed easy access to a wide array of α-N,N-dialkylamino-substituted benzyllithium derivatives. Reaction of these organometallics with various electrophiles afforded the expected products in satisfactory yields.
Application of <sup>13</sup>C NMR Spectroscopy and <sup>13</sup>C-Labeled Benzylammonium Salts to the Study of Rearrangements of Ammonium Benzylides
作者:Tadeusz Zdrojewski、Andrzej Jończyk
DOI:10.1021/jo961231k
日期:1998.2.1
Ylides generated from N-(cyanomethyl)-N,N-dimethyl-N-[alpha-(trimethylsilyl)benzyl]ammonium chloride (4) and fluorideanion afford the products of [1,2] shift 11 and [2,3] shift 13. Formation of product 13 shows that, in the presence of water from TBAF, rearrangements and [1,3]H shift in ylide intermediates become competitive processes. The reaction of N-benzyl-N,N-dimethyl-N-[alpha-(trimethylsilyl)benzyl]ammonium
Activation of benzylic amines towards regioselective metallation by borane complex formation
作者:Mark R. Ebden、Nigel S. Simpkins、David N.A. Fox
DOI:10.1016/0040-4039(95)01797-l
日期:1995.11
Formation of borane complexes of N, N-dimethylbenzylamine 4 and N methyltetrahydroisoquinoline 1 facilitates regioselective metallation of these systems using BuLi, giving benzylic anions which react with a range of electrophiles.