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Chemical name:


Product number: AS2052

CAS number: 1874264-99-9

Patent number: PCT/EP2003/011222

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Very good for mRCM (macrocyclization) and small/medium ring formation from sterically non-demanding substrates. Very good for CM of terminal, type 1 olefins. Good for CM with substrates bearing unprotected alcohols. Less sensitive to impurities than nitro-Grela and nitro-Grela-SIPr. Suppressed formation of non-metathetic byproducts.

Chemical properties

Chemical formula:



Molecular weight:

854.52 g/mol

Physical state:



olive / brown

Handling information

High stability allows catalyst handling on air.

Storage information

Long-term storage (>1 week):

Store under inert gas in a cold place (recommended temp. 2 - 8 °C).

Short-term storage (<1 week):

Store under inert gas at ambient temperature.


A. Tracz, M. Matczak, K. Urbaniak, K. Skowerski “Nitro-Grela-type complexes containing iodides – robust and selective catalysts for olefin metathesis under challenging conditions” Beilstein J. Org. Chem., 11, 1823-1832, (2015).



C. P. Breen, C. Parrish, N. Shangguan, S. Majumdar, H. Murnen, T. F. Jamison, M. M. Bio “A Scalable Membrane Pervaporation Approach for Continuous Flow Olefin Metathesis” Org. Process Res. Dev., 24, 10, 2298-2303, (2020).

Any questions about product?

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