vinyl ether-alt-maleic anhydride) (PMVEMA) (average Mw ∼ 216 kDa, average Mn ∼
80 kDa), polyethyleneimine (PEI)–branched (average Mw ∼ 800 Da, average Mn ∼ 600 Da), 4-iodotoluene (99%), 4-iodoanisole
(99%), 4-bromoanisole (99%), and bromobenzene (99%) were used as received
from Sigma-Aldrich. Ethanol (200 proof, 100%, bioreagent grade), potassium
carbonate (99%), sodium borohydride (98%; granules ca. 3 mm), potassium
tetrachloropalladate(II) (99.99% metals basis), 4-bromotoluene (99%),
phenyl boronic acid (98%+), dimethyl sulfoxide (DMSO) (99.7%+), 4-bromophenol
(98 + %), 4-bromobenzotrifluoride (98%+), 4-bromobenzonitrile (97%+),
4-methylbenzeneboronic acid (98%), 4-(trifluoromethoxy)phenylboronic
acid (98%), 4-nitrophenol (99%), 4-chloronitrobenzene (98%+), 2,6-dimethylnitrobenzene
(99%+), 4-nitrobenzonitrile (97%), 4-(2-fluoro-4-nitrophenyl)morpholine
(98%), 3-fluoro-4-morpholinoaniline (98%+), 2,6-dimethylaniline (99%),
4-aminobenzonitrile (98%+), 4-aminophenol (98%), 4-chloroaniline (98%),
4-methylbiphenyl (98%+), 4-methoxybiphenyl (98%+), 4-phenylphenol
(97%), 4-cyanobiphenyl (95%), 4,4′-dimethylbiphenyl (99%),
4,4′-biphenol (97%), and biphenyl-4,4′-dicarbonitrile
(98%) were used as received from Fisher Scientific. Water (18.2 MΩ)
was filtered, purified, and deionized using a PURELAB Flex 3.