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Z- or E-configurated γ-alkylidenebutenolides from a 2-(trimethylsiloxy)furan and iodomethacrolein - stereoselective synthesis of Z- and E-freelingyne

✍ Scribed by Frank von der Ohe; Reinhard Brückner

Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 142 KB
Volume: 39
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(98)00240-8

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✦ Synopsis

The )'-(t~-hydroxylalkyl)butenolides lk-5 and ul-5 were prepared by Mukaiyama aldol additions between iodoaldehyde 10 and the trimethylsiloxy-substituted furan 6 in the presence of BF3eOEt2 and ZnBr2, respectively. Couplings of these butenolides with 3-ethynylfuran followed by anti-eliminations

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