Selective oxidation of acetylenic 1,4-diols with dioxiranes in comparison with the methyltrioxorhenium–hydrogen peroxide oxidant
作者:Lucia D’Accolti、Michele Fiorentino、Caterina Fusco、Pasquale Crupi、Ruggero Curci
DOI:10.1016/j.tetlet.2004.09.110
日期:2004.11
1,4-diols) into the corresponding carbonyls, leaving the carbon–carbon triple bond moiety untouched. The results are compared with those recorded in the analogous oxidation using the methyltrioxorhenium (MTO)/85% H2O2 homogeneous system. The powerful methyl(trifluoromethyl)dioxirane (1b) is the reagent of choice to achieve optimum yields of the target alkyne-1,4-diones, which are extremely versatile
使用二甲基二环氧乙烷(1a)及其三氟类似物(1b)选择性地实现hex-3-yne-2,5-diol 3a和1,4-diphenyl-but-2yne-1,4-diol 3b(将两个代表性的炔属1,4-二醇)放入相应的羰基中,而碳-碳三键部分保持不变。将结果与使用甲基三氧ox(MTO)/ 85%H 2 O 2均相系统进行类似氧化时记录的结果进行比较。强大的甲基(三氟甲基)二环氧乙烷(1b)是选择的试剂,可实现目标炔1,4-二酮的最佳收率,这是一种用途广泛的合成子。