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. Author manuscript; available in PMC: 2021 Jan 22.
Published in final edited form as: J Am Chem Soc. 2020 Jan 10;142(3):1603–1613. doi: 10.1021/jacs.9b12519

Table 3.

Scope of the Visible Light-Induced C-O Borylation Reaction.a

graphic file with name nihms-1577406-t0007.jpg
a

Reaction conditions: phosphate ester (0.2 mmol), B2Pin2 (0.6 mmol), Cs2CO3 (0.6 mmol), PTH1 or PTH4 (2–12 mol%), MeCN (2 mL), LED light (400 or 420 nm).

b

B2Pin2 (0.4 mmol).

c

In the presence of water (1 equiv.).

d

PTH4 was used.

e

B2Pin2 (0.3 mmol).

f

The keto group in the phosphate ester was protected as an acetal that was removed concomitantly with conversion to trifluoroborate 31. g 450 nm.