作者:Mohamed K. Mokhallalati、Ming-Jung Wu、Lendon N. Pridgen
DOI:10.1016/s0040-4039(00)60054-0
日期:1993.1
Ethyl tributylstannylacetate was reacted with (R)-2-aryl or alkyl-1,3-oxazolidines 6 under very specific (ZnCl2/Et2O·BF3, 0.5 equiv each) Lewis Acid catalysed conditions to yield (1R, 1′R)-N-2′-hydroxy-1′-phenylethyl-1-aryl or alkyl-2-carboethoxyethylamine 8 in 91–99% de. The amino alcohol products 8 were converted to aromatic and aliphatic β-amino esters 9, useful precursors to β-lactams.
在非常特定的(ZnCl 2 / Et 2 O·BF 3,各0.5当量)路易斯酸催化条件下,使三丁基锡锡乙酸乙酯与(R)-2-芳基或烷基1,,3-恶唑烷6反应,得到(1R,1' R)-N-2'-羟基-1'-苯基乙基-1-芳基或烷基-2-羰基乙氧基乙胺8在91–99%de中。将氨基醇产物8转化为芳族和脂族β-氨基酯9,它们是β-内酰胺的有用前体。