Behaviour of monocomplexed 1,4-diynes in the Khand reaction and use of ethylene equivalent techniques in a convenient route to tritium-labelled methyl jasmonate
作者:William J. Kerr、Mark McLaughlin、Peter L. Pauson
DOI:10.1016/s0022-328x(01)00890-7
日期:2001.7
1,2-Complexed hexacarbonyl(hepta-1,4-diyne)dicobalt, obtained from hexacarbonyl(propargyl acetate)dicobalt with tri-1-butynylaluminium, has been converted, by selective Khand annulation of the complexed triple bond with vinyl benzoate, to 2-pent-2-yn-1-ylcyclopent-2-en-1-one. By use of standard procedures this alkynyl cyclopentenone has been transformed into methyl jasmonate, allowing replacement of
由六羰基(乙酸炔丙基酯)二钴与三-1-丁炔基铝制得的1,2-络合六羰基(庚基1,4-二炔)二钴已通过与苯甲酸乙烯酯络合的三键的选择性Khand环化反应转化为2-pent-2-yn-1-ylcyclopent-2-en-1-one。通过使用标准程序,该炔基环戊烯酮已被转化为茉莉酸甲酯,允许通过tri化代替最终的氢化步骤以产生标记的类似物。对中间体戊炔基环戊烯酮的两种替代方法进行了研究,结果证明是不成功的。