Synthesis of α-amino acids with β,γ-unsaturated side chains
作者:Arlindo L. Castelhano、Stephen Horne、Gregg J. Taylor、Roland Billedeau、Allen Krantz
DOI:10.1016/s0040-4020(01)86051-8
日期:1988.1
α-Amino acids with allenyl, vinyl, and acetylenic side chains can be synthesized using non-enolate based strategies. The ester enolate-Claisen rearrangement applied to propargylic esters of N -protected α-amino acids ie of limited utility since only poor yields of allenic product are obtained with the N-Boc glycine esters, the system which give the most reproducible results. However, α-allenyl-α-amino
Base assisted substitution of α-amidoalkyl sulfones by nitromethane anion. A new entry to functionalized α-amino acids
作者:Roberto Ballini、Marino Petrini
DOI:10.1016/s0040-4039(99)00770-4
日期:1999.6
The nitromethane anion reacts with alpha-amidoalkyl sulfones in THF affording the corresponding nitro derivatives that upon oxidation with alkaline potassium permanganate give the corresponding N-protected a-amino acids. (C) 1999 Elsevier Science Ltd. All rights reserved.
CASTELHANO, A. L.;HORNE, S.;BILLEDEAU, R.;KRANTZ, A., TETRAHEDRON LETT., 1986, 27, N 22, 2435-2438
作者:CASTELHANO, A. L.、HORNE, S.、BILLEDEAU, R.、KRANTZ, A.