Double Conjugate Addition of Dithiols to Propargylic Carbonyl Systems To Generate Protected 1,3-Dicarbonyl Compounds
作者:Helen F. Sneddon、Alexandra van den Heuvel、Anna K. H. Hirsch、Richard A. Booth、David M. Shaw、Matthew J. Gaunt、Steven V. Ley
DOI:10.1021/jo052514s
日期:2006.3.31
methoxide to a wide variety of propargylic carbonyl containing compounds. The products of these reactions are differentiated, 1,3-dicarbonyl systems useful for various synthesis programs. By judicious use of hydroxylated substrates tandem cyclization occurs to afford tetrahydropyran lactols or, in the case of hydroxy-substituted propargylic esters, lactones. The corresponding amino-substituted propargylic
该工作描述了在甲醇钠存在下,将乙烷和丙烷二硫醇有效地双共轭加成到各种含炔丙基羰基的化合物中。这些反应的产物是可用于各种合成程序的有区别的1,3-二羰基体系。通过明智地使用羟基化的底物,发生串联环化反应,得到四氢吡喃内酯,或者在羟基取代的炔丙基酯的情况下得到内酯。相应的氨基取代的炔丙基醛经双共轭加成串联环化得到哌啶衍生物。