Formation of vicinal tricarbonyl compounds by selective oxidation of ylides using potassium peroxymonosulfate
作者:Harry H. Wasserman、Chi B. Vu
DOI:10.1016/s0040-4039(00)97843-2
日期:——
Potassiumperoxymonosulfate (commercially available as Oxone® = 2KHSO5·KHSO4&·K2SO4) oxidatively cleaves substituted ylides to afford products containing vicinal tricarbonyl groups.
过氧一硫酸钾(以= 2KHSO 5 ·KHSO 4&·K 2 SO 4的形式商业销售)氧化裂解取代的叶立德,得到含有邻位三羰基的产物。
WASSERMAN, HARRY H.;VU, CHI B., TETRAHEDRON LETT., 31,(1990) N6, C. 5205-5208
作者:WASSERMAN, HARRY H.、VU, CHI B.
DOI:——
日期:——
Selective Oxidation of Phosphorus Ylides by Dimethyldioxirane. Application to the Formation of Vicinal Tricarbonyls
作者:Harry H. Wasserman、Carmen M. Baldino、Steven J. Coats
DOI:10.1021/jo00130a023
日期:1995.12
Dimethyldioxirane (DMD) has proven to be an effective reagent for the selective conversion of phosphoranylidene intermediates 4 to the corresponding vicinal tricarbonyls 5. Unlike existing oxidation protocols which employ relatively vigorous conditions, this transformation is conducted rapidly at low temperature under neutral conditions, without the necessity of an aqueous workup. Selective oxidation of the phosphorus ylides in the presence of a variety of sensitive functionality was achieved by lowering the reaction temperature and controlling the concentration of oxidant.