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A new synthesis of Δ2-butenolides via stereoselective formation of α,β-ethylenic esters.

✍ Scribed by M. Larcheveque; Ch. Legueut; A. Debal; J.Y. Lallemand

Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
184 KB
Volume
22
Category
Article
ISSN
0040-4039

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✦ Synopsis

Abnticx

: A MW 6ynthend 04 ~2-buttnotidti ih de.bcLbcd which .&o&m h.kt&Oh&Lc-Live condenntion 06 an cx-htiyt uteh anion ukth an cu-hetoacefal.

Unsaturated five membered ring lactones, butenolides, occur widely in nature and display a wide range of interesting properties (1). Despite the great variety of synthetic methods, there is not a general route to these compounds and difficulties are frequently encountered to prepare specific compounds (2).

In connection with other work, we needed an efficient route to terpenoid butenolides of structure I.

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