Formation of homoallyl alcohols and 4-chlorotetrahydropyrans from allyl-stannanes, aldehydes and TiCl 4 or Cp 2 TiCl 2

D Marton, G Tagliavini, M Zordan, JL Wardell

文献索引：Marton, Daniele; Tagliavini, Giuseppe; Zordan, Michele; Wardell, James L. Journal of Organometallic Chemistry, 1990 , vol. 391, # 3 p. 295 - 305

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被引用次数: 3

摘要

Abstract Reactions between Bu 3 SnCHR 1 CH CHR 2 (1; R 1= H, R 2= H or Me; R 1, R 2=(CH 2) 3) and EtCHO in the presence of TiCl 4 or Cp 2 TiCl 2 are reported. The compound, Cp 2 TiCl 2, has been found to be an effective Lewis acid catalyst for the allylation of EtCHO using 1 (R 1= H, R 2= Me) and 1 (R 1, R 2=(CH 2) 3) in CH 2 Cl 2 or Et 2 O solutions at− 78 C; the products after hydrolysis are homoallyl alcohols with stereo-and ...