STEREOSELECTIVE SYNTHESIS OF ALCOHOLS .22. E/Z-SELECTIVITY ON ADDITION OF ALPHA-SUBSTITUTED ALLYLBORONATES TO ALDEHYDES
STEREOSELECTIVE SYNTHESIS OF ALCOHOLS .22. E/Z-SELECTIVITY ON ADDITION OF ALPHA-SUBSTITUTED ALLYLBORONATES TO ALDEHYDES
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DOI:
10.1002/cber.19861190324
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发表时间:
1986-03-01
期刊:
影响因子:
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通讯作者:
LANDMANN, B
中科院分区:
文献类型:
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作者:
HOFFMANN, RW;LANDMANN, B
< jats: title> Abstract< jats: p> α‐Heterosubstituted allylboronates< jats: bold> 7 are prepared. Addition of< jats: bold> 7 to aldehydes results in< jats: italic> E/Z‐isomeric homoallyl alcohols< jats: bold> 13 and< jats: bold> 14. The reasons for the predominant formation of the< jats: italic> Z‐isomer< jats: bold> 14 are discussed. The< jats: italic> Z‐bromo olefins< jats: bold> 16 and< jats: bold> 20 obtained in this way serve as starting point for chain extension or formation of δ‐lactones< jats: bold> 21.