Dichloroborane (cas 13701-67-2)–dioxane: an exceptional reagent for the preparation of alkenyl- and alkylboronic acids
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Add time:09/07/2019 Source:sciencedirect.com
Terminal alkynes and alkenes were conveniently hydroborated to the corresponding alkenyl- and alkyldichloroboranes using dichloroborane–dioxane in dichloromethane. These dichloroboranes were hydrolyzed by water to the corresponding alkenyl- and alkylboronic acids in moderate to good yields. With terminal alkenes and alkynes boron was predominantly attached to terminal carbon. Alkynes gave exclusively trans-vinylboronic acids.
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