. 2023 Feb 10;88(10):6454–6464. doi: 10.1021/acs.joc.2c02952

Table 1. Reaction Scheme and Photocatalysts Employed^a.

entry	base	solvent	concentration (M)	PC	yield^b (%)
1	–	DMF	0.1	11	trace
2	NEt₃	DMF	0.1	11	49
3	TMG	DMF	0.1	11	51
4	Me-TBD	DMF	0.1	11	58
5	TBD	DMF	0.1	11	71
6	TBD	MeCN	0.1	11	68
7	TBD	MeCN	0.05	11	73
8^c	*TBD*	*MeCN*	*0.05*	11	76
9	TBD	MeCN	0.05	–	trace
10^c^,^d	TBD	MeCN	0.05	11	–
11^c	TBD	MeCN	0.05	12	73
12^c	TBD	MeCN	0.05	13	71

E*_ox and E*_red refer to the potentials of the PC^•+/PC* and PC*/PC^•– couples, respectively;²⁴ potentials are reported vs Fc⁺/Fc (for comparison with literature data: E vs Fc⁺/Fc = E vs SCE – 0.37 V). The BDFE values are calculated according to eq 1 (vide infra). Optimization of reaction parameters: General conditions are 0.1 mmol of 4a, 1 atm. of CO₂, 1 mL of solvent.

Yields are given by ¹H NMR analysis with dibromomethane as internal standard.

2 mol % of 11 was used.

No light irradiation.

Table 1. Reaction Scheme and Photocatalysts Employeda.

Table 1. Reaction Scheme and Photocatalysts Employed^a.