Selective synthesis of 1-alkoxy-3-phenylseleno-1-alkenes and 3-phenylselenoalkanals by the reaction of diisobutylaluminum phenylselenolate with α,β-unsaturated acetals
✍ Scribed by Yutaka Nishiyama; Tomoyuki Asano; Yoshihiro Kishimoto; Kazuyoshi Itoh; Yasutaka Ishii
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 130 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The reaction of ~t,~-unsaturated acetals with diisobutylaluminum phenylselenolate followed by treatment with H20 affords the corresponding 1-alkoxy-3-phenylseleno-l-alkenes in good yields. When aq. HCI instead of H20 was employed in the workup, 3-phenylselenoalkanals were formed in good yields.
📜 SIMILAR VOLUMES
## Abstract magnified image 1‐Acetyl‐, 1‐propionyl‐ and 1‐phenyl‐3,5‐diaryl‐2‐pyrazolines have been synthesized by the reaction of the appropriate α,β‐unsaturated ketones with hydrazine or phenylhydrazine in hot acetic acid or propionic acid. Structures of all new 2‐pyrazolines **16‐40** have been
## Abstract 1,3‐Dipolar cycloadditions of exocyclic α,β‐unsaturated ketones 1‐22 with diazomethane afforded spiro‐1‐pyrazolines 23‐44 in a diastereospecific reaction. The structure and stereochemistry of each compound synthesised has been elucidated by nmr spectroscopic measurements and other analy