C2-Symmetrical Pyrrolidine Derivatives Chiral Auxiliaries in Radical Chemistry
作者:Andres Veit、Roman Lenz、Martin E. Seiler、Markus Neuburger、Margareta Zehnder、Bernd Giese
DOI:10.1002/hlca.19930760128
日期:1993.2.10
5-dideoxy-2,5-imino-L-idit (2c), respectively, as a chiral auxiliary lead to high diastereoselectivities in radicalreactions (‘tin method’;Scheme 1). Removal of the chiral auxiliaries affords the corresponding alkylated fumaric acids Scheme 2. Single-crystal X-ray structures of 3b and 3c support arguments that lead to the model of 1,4-stereoinduction.