(R)-1-Acetyl-5-isopropoxy-3-pyrrolin-2-one: a versatile chiral dienophile from (S)-malic acid
摘要:
The title compound, readily prepared from (S)-malic acid, reacts as a Diels-Alder dienophile with several 1,3-dienes with excellent regio- and stereoselectivity without loss of enantiomeric purity. The synthesis of an enantiomerically pure intermediate in a projected synthesis of gelsemine is detailed.
(R)-1-Acetyl-5-isopropoxy-3-pyrrolin-2-one: a versatile chiral dienophile from (S)-malic acid
摘要:
The title compound, readily prepared from (S)-malic acid, reacts as a Diels-Alder dienophile with several 1,3-dienes with excellent regio- and stereoselectivity without loss of enantiomeric purity. The synthesis of an enantiomerically pure intermediate in a projected synthesis of gelsemine is detailed.
Chirality preservation in pyrrolinone iron tetracarbonyl complexes ? a route to enantiopure 5-substituted pyrrolinones
作者:Johan C. P. Hopman、Henk Hiemstra、W. Nico Speckamp
DOI:10.1039/c39950000617
日期:——
The enantiopure iron complex 4 reacts under the influence of BF3·OEt2 with allylsilanes and enol acetates through a cationic intermediate in which the chirality of 4 is preserved, yielding enantiopure 5-substituted 3-pyrrolin-2-ones.
Determination of the Absolute Configuration of 3-Pyrrolin-2-ones
作者:Agnes D. Cuiper、Malgorzata Brzostowska、Jacek K. Gawronski、Wilberth J. J. Smeets、Anthony L. Spek、Henk Hiemstra、Richard M. Kellogg、Ben L. Feringa
DOI:10.1021/jo982151e
日期:1999.4.1
(R)-1-Acetyl-5-isopropoxy-3-pyrrolin-2-one: a versatile chiral dienophile from (S)-malic acid
作者:Wim Jan Koot、Henk Hiemstra、W. Nico Speckamp
DOI:10.1021/jo00030a002
日期:1992.2
The title compound, readily prepared from (S)-malic acid, reacts as a Diels-Alder dienophile with several 1,3-dienes with excellent regio- and stereoselectivity without loss of enantiomeric purity. The synthesis of an enantiomerically pure intermediate in a projected synthesis of gelsemine is detailed.