Benzofuroxan (l) reacts wlth phosphorus ylfde gto give benzimidazole derivatives 8 and l& whereas reaction of fwith ylide 12 furnishes quinoxaline 17 via an initial Wittig-typa reaction. Similarly the reaction beGen the furoxano[3,4-blquinoxal1nes lga or lgb and the ylide 2 yielded compounds 22a and
Reactions of esters with phosphorus ylides. 2. Mechanistic aspects
β Scribed by Uijttewaal, Arnold P.; Jonkers, Froukje L.; Van der Gen, Arne
- Book ID
- 118273138
- Publisher
- American Chemical Society
- Year
- 1978
- Tongue
- English
- Weight
- 882 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0022-3263
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The reaction of alkoxycarbonylmethylentriphenylphosphonium ylides 1 with alkyl propynoates 2 in dichlormethane proceeds via [2+2]cycloaddition rather than Michael addition, to lead to stabilised phosphonium ylides. In the course of our investigations into the reactivity of acetylendicarboxilic acid
During the course of our investigation of the synthesis of oic-triasoles by reacting a-keto-and a-ester phosphorus ylides with acyl asides and ethyl asidoformate (1 + 2 + z), we found that the N-l substituted triasoles,isomerised to the N-2 substituted triasoles (1 + A) under the basic reaction cond