Add time:07/17/2019         Source:sciencedirect.com

(E)-rich 1-Bromo-2-butene preferentially caused γ-syn-allylation of aldehydes with tin(II) iodide and tetrabutylammonium bromide (or iodide) in THF-H2O or 1,3-dimethyl-2-imidazolidinone-H2O to produce 1-substituted syn-2-methyl-3-buten-1-ols.

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