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A facile method for the preparation of α-methylene-γ-butyrolactones from tulip tissues by enzyme-mediated conversion

✍ Scribed by Yasuo Kato; Hiroyuki Yoshida; Kazuaki Shoji; Yukio Sato; Noriyuki Nakajima; Shinjiro Ogita

Book ID: 108285596
Publisher: Elsevier Science
Year: 2009
Tongue: French
Weight: 159 KB
Volume: 50
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2009.06.018

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## Abstract α‐Acyloxy aldehydes (**2a,b**) react with 1,1‐dimethoxypropene (**1**) in the presence of ZnCl~2~ to yield 2,2‐dimethoxy‐3‐methyloxetanes (**3a,b**). Stronger electron‐withdraxing acyl groups are necessary for the analogous conversion ofα‐acyloxy ketones (**2c,d,e**). Hydrolysis of the