I just tumbled across with some 2-Formyl-4,5-methylenedioxyphenylboronic acid ..
Molecule: (https://www.the-hive.ws/forum/faq.pl?Cat=#applet)
stuff ("c1(c(cc2c(c1)OCO2)B(O)O)C=O")
I was wondering is there any feasible way to get the B(OH)2 out from it to get our goodie? ;)