Asymmetric Synthesis of Unsaturated Monocyclic and Bicyclic Nitrogen Heterocycles
摘要:
Hydrolysis of scalemic trichloroacetamides Cl3CCONHCH(R)CHCH2 and allylation, or acylation with but-3-enoic acid, followed by ring-closing metathesis resulted in the formation of unsaturated pyrrolidine and piperidine building blocks. These were employed in the synthesis of (S)-coniine (R = Pr) and a formal synthesis of (+)-anisomycin (R = p-MeOC5H4). Extension of this methodology with R = CH2CHCH2 employing two ring-closing metatheses resulted in the synthesis of unsaturated quinolizidinone and indolizidinone frameworks.
Asymmetric Synthesis of Unsaturated Monocyclic and Bicyclic Nitrogen Heterocycles
摘要:
Hydrolysis of scalemic trichloroacetamides Cl3CCONHCH(R)CHCH2 and allylation, or acylation with but-3-enoic acid, followed by ring-closing metathesis resulted in the formation of unsaturated pyrrolidine and piperidine building blocks. These were employed in the synthesis of (S)-coniine (R = Pr) and a formal synthesis of (+)-anisomycin (R = p-MeOC5H4). Extension of this methodology with R = CH2CHCH2 employing two ring-closing metatheses resulted in the synthesis of unsaturated quinolizidinone and indolizidinone frameworks.
Catalytic Asymmetric Rearrangement of Allylic <i>N</i>-Aryl Trifluoroacetimidates. A Useful Method for Transforming Prochiral Allylic Alcohols to Chiral Allylic Amines
作者:Larry E. Overman、Carolyn E. Owen、Mary M. Pavan、Christopher J. Richards
DOI:10.1021/ol0271786
日期:2003.5.1
useful method for the conversion of prochiral allylic alcohols to chiral allylic amines of high enantiopurity is reported. N-(4-Methoxyphenyl)trifluoroacetimidates are excellent substrates for the palladium(II)-catalyzed allylicimidaterearrangement as the allylic trifluoroacetamide products can be deprotected in two steps to provide chiral nonracemic allylic amines. Di-mu-chlorobis[(eta(5)-(S)-(pR)-
Ringdahl, Bjoern, Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry, 1984, vol. 38, # 2, p. 141 - 152
作者:Ringdahl, Bjoern
DOI:——
日期:——
Asymmetric Synthesis of Unsaturated Monocyclic and Bicyclic Nitrogen Heterocycles
作者:Hiroshi Nomura、Christopher J. Richards
DOI:10.1021/ol900880w
日期:2009.7.2
Hydrolysis of scalemic trichloroacetamides Cl3CCONHCH(R)CHCH2 and allylation, or acylation with but-3-enoic acid, followed by ring-closing metathesis resulted in the formation of unsaturated pyrrolidine and piperidine building blocks. These were employed in the synthesis of (S)-coniine (R = Pr) and a formal synthesis of (+)-anisomycin (R = p-MeOC5H4). Extension of this methodology with R = CH2CHCH2 employing two ring-closing metatheses resulted in the synthesis of unsaturated quinolizidinone and indolizidinone frameworks.