Room-temperature metallation of 2-substituted 1,3-dithiane derivatives and subsequent coupling with 2,3-disubstituted oxiranes

Mitsuaki Ide, Masaya Nakata

研究成果: Article査読

58 被引用数 (Scopus)

抄録

2-Substituted 1,3-dithiane derivatives, (S)-1(t-butyldiphenylsiloxy)-2- (1,3-dithian-2-yl)propane (9), (S)-1-(t-butyldimethylsiloxy)-2-(1,3-dithian- 2-yl)propane, 1-(t-butyldiphenylsiloxy)-2-(1,3-dithian-2-yl)-2-methylpropane, and 1,2-bis-(t-butyldiphenylsiloxy)-3-(1,3-dithian-2-yl)propane, were subjected to lithiation in THF with n-BuLi at room temperature (r.t.); the resulting anions reacted with 2,3-disubstituted oxirane, trans-2-methyl-3- (triphenylmethoxymethyl)oxirane(22), at r.t., giving the coupling products in satisfactory yield. On the other hand, the lithium salt formed in ether from (S)2-(1,3-dithian-2-yl)-1-(4-methoxybenzyloxy)propane with n-BuLi at r.t. reacted with 22 at r.t. in the presence of hexamethylphosphoric triamide to afford the coupling product in moderate yield. In addition, a mixed organometallic reagent, n-BuLi/Bu2Mg, was found to be an effective metallation reagent for 9 and the resulting anion reacted with 22 to afford the coupling product in good yield.

本文言語English
ページ(範囲)2491-2499
ページ数9
ジャーナルBulletin of the Chemical Society of Japan
72
11
DOI
出版ステータスPublished - 1999 11月
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)

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