## Abstract 1‐Trimethylsilyl‐1,3‐diyne derived trans‐bis(trimethylstannyl) enynes undergo stepwise transmetallation with methyllithium to furnish the corresponding enynyllithium reagents. The application, in various orders, of a sequence of transmetallation‐protonation‐alkylation‐hydroxyalkylation‐
Selective reduction of unsaturated γ- and δ-lactones by magnesium-methanol
✍ Scribed by Bidar, M.; Tokmajyan, G.; Nasiri, F.
- Book ID
- 120229387
- Publisher
- Springer
- Year
- 2013
- Tongue
- English
- Weight
- 69 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0009-3130
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γ-Oxo-α,β-unsaturated δ-lactones and lactams, which are in high yields, of the corresponding α-amino-γ-oxo-α,βunsaturated δ-lactones and -lactams, compounds of great easily accessible from their corresponding 2-furylcarbinols, were used as substrates for the 1,4-reductive addition of biological and
## Abstract A preparatively useful one‐step transformation of __γ__,__γ__‐disubstituted __α__‐formyl‐__γ__‐lactones into trisubstituted __γ__,__δ__‐unsaturated aldehydes is described, by means of catalytic amounts of either AcOH or AcOEt in the vapor phase over a glass support. A mechanistic ration