OTs-C6-OBn

OTs-C6-OBn, is designed to provide a modular connection point between a targeting ligand and an E3-recruiting element, enabling efficient construction of targeted protein degraders. Its linker architecture supports reliable conjugation strategies commonly used in PROTAC synthesis, facilitating rapid assembly and optimization of degradation potency and selectivity. The following sections describe the molecule’s structure and the practical reactivity considerations relevant to PROTAC workflows in detail below.

Structure: OTs-C6-OBn is a six-carbon alkyl linker bearing an OTs leaving group and a benzylic ether motif. It contains an alkyl chain, an ether linkage, and a sulfonate ester functionality, with multiple heteroatoms that influence polarity and solubility. These features support controlled derivatization under standard organic synthesis conditions.

Reactivity: The OTs group functions as an excellent leaving group for nucleophilic substitution, making the linker suitable for installing PROTAC fragments through ether-forming or related bond-formation steps. Typical approaches use nucleophiles such as alcohols or amines under base-promoted conditions, often in polar aprotic solvents, to drive substitution while minimizing side reactions. Reaction monitoring by standard analytical methods is recommended to confirm conversion and preserve linker integrity.