O

Pd(OAc)2

Scheme 48

The triazene linker system may also be reversed to be used as linker for aliphatic amines [94].

3.1.4 Photolabile Linker Units 3.1.4.1 Introduction

Photolabile linkers are stable under a great number of other reaction conditions in organic synthesis, and they also allow for release under neutral conditions. Photolabile linking groups for hydroxy and amino functions can be divided into three different basic entities, as shown in Fig. 2.

,N02

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