8.55074

Weinreb AM resin

Novabiochem^®

• Synonym(s): N-Fmoc- N-methoxy-β-alanine AM resin
• UNSPSC Code: 12352203
• NACRES: NA.22

Properties

• Quality Level: 200
• product line: Novabiochem^®
• form: beads
• reaction suitability: reaction type: Fmoc solid-phase peptide synthesis
• manufacturer/tradename: Novabiochem^®
• application(s): peptide synthesis
• storage temp.: 2-30°C

Description

General description

This support is useful for the production of peptide aldehydes and other carboxaldehydes. Following removal of the Fmoc group with 20% piperidine in DMF, acylation of the resin-bound methoxylamine is best effected using DIPCDI/HOAt or HATU/DIPEA activation. This results in formation of a supported Weinreb-type amide which can be either reduced to an aldehyde with LiAlH4 ^[1,2] or cleaved with Grignard reagents to give ketones ^[2,3].

Associated Protocols and Technical Articles
Protocols for Loading of Peptide Synthesis Resins

Linkage

Replaces: 01-64-0153

Analysis Note

Color (visual): white to yellow to beige
Appearance of substance (visual): beads
Loading (Photometric determination of the Fmoc-chromophore liberated upon treatment with DBU/DMF): 0.40 - 1.00 mmol/g
Swelling Volume (in CH₂Cl₂): lot specific result
The polymer matrix is copoly (styrene - 1 % DVB), 100 - 200 mesh

Legal Information

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable