Abstract
The reaction of 3H-indoles with tertiary propargylic alcohols to give functionalized dihydrooxazolo[3,2-a]indoles in good to excellent yields has been developed. This metal- and solvent-free, one-pot tandem assembly proceeds under mild conditions (22–60 °C) and is regio- and stereoselective: either the Z- or E-isomers (relative to the double bond) are alternatively formed depending on other functionalized substituents on the propargylic alcohols.
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