Table 2.
| |||
---|---|---|---|
entry | palladacycles | conversion (%)b
|
|
10 s | 3 min | ||
1 |
9 |
83 | >99 |
2 |
10 |
71 | >99 |
3 |
11 |
79 | 97 |
4 |
12 |
42 | >99 |
5 |
13 |
40 | >99 |
6 |
14 |
49 | >99 |
7 |
15 |
74 | >99 |
8 |
16 |
80 | >99 |
9 |
17 |
74 | >99 |
10 |
18 |
35 | >99 |
11 |
19 |
41 | >99 |
12 |
20 |
41 | 53 |
Reaction was carried out by incubating 2.5 μM Ub-Hpg with 10 μM palladacycle at room temperature for the indicated time (see detail procedure in SI, general procedures for the reaction of palladacycles with Ub-Hpg).
Conversion was determined based on LC-MS analysis: conversion % = Iproduct/(IUb-Hpg + Iproduct), where IUb-Hpg and Iproduct represent the ion counts of Ub-Hpg and the product, respectively.