Allenyl-1a,b and alkynyl-stannanes 2a-c are synthesized by reaction of the corresponding allenyl- and alkynyl-tributylstannanes with tin tetrachloride or dichlorodimethylstannane followed by a chemoselective reduction of the formed chlorostannanes with tributylstannane in the presence of duroquinone or galvinoxyl, a radical inhibitor.
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Lassalle et al. (1995) studied this question.
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