Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... The directed methallylation of β-hydroxyaldehydes and ketones with methallyboronic acid is examined. The reaction proceeds with good to excellent selectivity with ketones. ... Addition of methallylboronic acid to β-hydroxyaldehydes and ketones has been studied as a ...