1-Benzyloxy-3-(p-tolylsulfonyl)propene as an acrolein β-anion equivalent. Synthesis of 4-substituted 2-butenolides
作者:Donald Craig、Christopher J. Etheridge、Alison M. Smith
DOI:10.1016/s0040-4039(00)60211-3
日期:1992.11
Lithiation of 1-benzyloxy-3-(p-tolylsulfonyl)propene 6 and reaction with aldehydes give alcohols 7. Sequential hydrolysis-cyclization, oxidation and DBU-mediated elimination of dine elements of p-TolSO2H gives 4-substituted 2-butenolides 10 in good overall yield.
1-苄氧基-3-(对甲苯磺酰基)丙烯6的锂化和与醛的反应得到醇7。通过顺序水解-环化,氧化和DBU介导的对-TolSO 2 H的二价元素消除,可得到具有良好总收率的4-取代的2-丁烯内酯10。