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. 2021 Apr 6;86(8):5845–5851. doi: 10.1021/acs.joc.1c00278

Table 1. Maximum Absorption and Molar Extinction Coefficient for Diazoketones 1a–g.

diazoketone λmax (nm) εmaxa,b ε450a,c
1a 253 9600 1.21
1b 252 7600 0.96
1c 307 13500 2.29
1d 248 8300 0.90
1e 250 5200 0.84
1f 301 18400 2.11
1g 268 11100 1.34
a

Expressed in L mol–1 cm–1.

b

Determined in dichloromethane at 0.1–0.05 mM concentration.

c

Determined in dichloromethane at 0.1 M concentration.