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The invention relates to bi-functionalised metallocenes of general formula (I) where Me=a transition metal, preferably chosen from Fe, Ru and Os, Y and Z, when identical are selected from ?(CH2)n?O?, (CH2)?O?[(CH2)2?O]P? and ?(CH2)q?CONH?(CH2)r?O?, or Y=?(CH2)S?NH? and Z=?(CH2)t?COO?, n=a whole number from 3 to 6 inclusive, p=a whole number from 1 to 4 inclusive, q=a whole number from 0 to 2 inclusive, r=a whole number from 0 to 2 inclusive, s=a whole number from 2 to 5 inclusive, t=a whole number from 3 to 6 inclusive, R and R?=H atoms or are protective groups used in oligonucleotide and peptide synthesis, where at least one of R or R? is protective group used in oligonucleotide and peptide synthesis and R and R? are as defined below: (i) when Z and Y are selected from (CH2)n?O?, ?(CH2)?O?[(CH2)2?O]p? and ?(CH2)q?CONH?(CH2)r?O?, then R and R? are protective groups used in oligonucleotide synthesis and R is a group which can leave a free OH group after deprotection, preferably a photolabile group such as monomethroxythoxytrityl, dimethoxytrityl, t-butyldimethylsilyl, acetyl or trifluroacetyl, and R? is a phosphorylated group which can react with a free OH, preferably a phosphodiester, phosphoramidite or H-phosphonate and (ii) when Y=?(CH2)n?NH? and Z=?(CH2)t?COO?, then R is a protective group used in the synthesis of peptides and is an amino-protecting group, preferably 9-fluorenyloxycarbonyl, t-butoxycarbonyl or benzyloxycarbonyl and R?=H. The above is applied in marking.
The prevalence of solvent effects in heterogeneous catalysis in condensed media has motivated developing theoretical assessments of solvent structures and their interactions with reaction intermediates and transition states. Quality Control of 1,1′-Ferrocenedicarboxaldehyde, you can also check out more blogs about1271-48-3
Reference:
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion