Journal of Organic Chemistry p. 1037 - 1040 (1985)
Update date:2022-07-29
Topics:
Russell, Glen A.
Herold, Lourdes Lucas
Free-radical chain substitution reactions of allyltributylstannane were observed with PhSSPh, PhCH2SSCH2Ph, PhSeSePh, PhSO2Cl, n-PrSO2Cl, or CCl3SO2Cl, where the attacking radicals leading to allylic rearrangement with displacement of Bu3Sn(radical) were PhS(radical), PhCH2S(radical), PhSe(radical), PhSO2(radical), n-PrSO2(radical), and CCl3(radical), respectively.Allylic rearrangement was also observed in the SH2' reaction of crotyltributylstannane with PhSSPh, PhCH2SSCH2Ph, PhSO2Cl, or n-PrSO2Cl.Propargyltriphenylstannane underwent SH2' substitution to form the allenic substitution products with PhSO2Cl, n-PrSO2Cl, CCl4, and CHCl3 while 2-butynyltriphenylstannane formed the 1,2-butadiene with PhSO2Cl or n-PrSO2Cl.Reaction of (1-cyclohexenyloxy)tributylstannane with CCl4 or BrCCl3 formed α-(trichloromethyl)cyclohexanone.With HCBr3 the initially formed α-(dibromomethyl)cyclohexanone readily underwent dehydrobromination to form α-(bromomethylene)cyclohexanone. <(2-Methyl-1-propenyl)oxy>tributylstannane formed α-(trichloromethyl)isobutyraldehyde with CCl4 or BrCCl3.Reaction with HCBr3 gave a mixture of α-(dibromomethyl)isobutyraldehyde and 1-(dibromomethyl)-2,2-dimethyloxirane.
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