Reactions of<i>o</i>-quinones with α-methyl- (or methylene) substituted phosphorus ylides. Synthesis of benzo[<i>b</i>]furan derivatives
作者:Daman R. Gautam、Konstantinos E. Litinas、Konstantina C. Fylaktakidou、Demetrios N. Nicolaides
DOI:10.1002/jhet.5570400301
日期:2003.5
In Wittig reaction of some α-methyl- and α-methylene-substituted phosphorus ylides with o-quinones, benzo[b]furan derivatives were obtained via the cyclization of the o-vinylphenols, initially formed from the tautomerization of the corresponding intermediate o-quinone methides.
在一些α-甲基和α-亚甲基取代的磷酰化物与邻醌的维蒂希反应中,通过邻乙烯基苯酚的环化反应获得了苯并[ b ]呋喃衍生物,该衍生物最初是由相应中间体邻-的互变异构形成的。醌甲基化物。
Schoenberg; Mustafa, Journal of the Chemical Society, 1946, p. 746
作者:Schoenberg、Mustafa
DOI:——
日期:——
PdBr
<sub>2</sub>
‐Catalyzed Acetal Formation of Carbonyl Compounds Using Diazophenanthrenequinone: Utility of 9,10‐Phenanthrenedioxyacetal
acetalization method of ketones and aldehydes under non‐acidic conditions was developed using diazophenanthrenequinone and PdBr2. The formed acetals that have a phenanthrene skeleton withstand under mild acidic conditions. Removal of acetals was successfully proceeded under strong acidic or oxidation conditions using aqueouscericammoniumnitrate (CAN).