๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

3-bromo-2-pyrone: an easily prepared chameleon diene and a synthetic equivalent of 2-pyrone in thermal diels-alder cycloadditions

โœ Scribed by Gary H. Posner; Todd D. Nelson; Chris M. Kinter; Kamyar Afarinkia

Publisher
Elsevier Science
Year
1991
Tongue
French
Weight
292 KB
Volume
32
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

โœฆ Synopsis

3-Bromo-2-pyrone, a stable solid prepared by a new route (eq. l), has been found to undergo smooth and regiospecific 2+4-cycloadditions between 78-90ยฐC with both electron-n& and electron-deficient dienophtles; subsequent high-yield reductive debrominattons produced halogen-free cycloadducts thus showmg 3-bromo-2-pyrone to be a practical and effective synthetic equivalent of 2-pyrone m thermal Diels-Alder cycloadditions.

๐Ÿ“œ SIMILAR VOLUMES

5-Bromo-2-pyrone: An easily prepared amb
5-Bromo-2-pyrone: An easily prepared ambiphilic diene and a synthetic equivalent of 2-pyrone in mild, thermal, Diels-Alder cycloadditions
โœ Kamyar Afarinkia; Gary H. Posner ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 267 KB

Bmmo-2-pyrone, a solid prepared easily in one-flask according to a new route (eq. 1). has been found to undergo smooth and highly regiocontrolled 2+4cycloadditlons between 251OtYC with both electron-poor and electron-rich dienophiles; subsequent radical debrominations produced halogen-free bicyclic