The reaction of carbonyl-stabilized sulfur ylides with some 1,3-dipoles
β Scribed by Yoshiyuki Hayashi; Takayoshi Watanabe; Ryohei Oda
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 200 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
## Abstract The reaction of a sixβmembered sulfonium ylide **5** with aldehydes or ketones afforded the oxirane derivatives **6aβd** as a mixture of cis and trans isomers in excellent yields. In addition, the same reactions, using fiveβ or sixβmembered cyclic oxosulfonium ylides **7** and **11**, g
Recent publications concerned with resonance-stabilized sulfonlum ylldes have covered their preparation, but relatively few of their chemical reactions have been described. l,'j-Dipoles are useful starting materials for the synthesis of heterocycles. In a recent note'), the result of the reaction b
Carbonyl-stabilized sulfonium ylides readily react with elemental sulfur and selenium to afford 1,3-oxathiole and 1,3-oxaselenole derivatives, respectively, in good yields, thus providing a simple method for constructing these ring systems which uses easily accessible compounds as starting materials