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Aaron R. Wegener ; Subrata K. Ghosh ; Nattamai Bhuvanesh , et al. Eur. J. Inorg. Chem.,2022,2022(13):e202200066. DOI: 10.1002/ejic.202200066
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Abstract: Reactions of RhCl3 and (S,S)-1,2-diphenylethylenediamine (S,S-dpen) in DMSO at 140?°C give Λ-[Rh(S,S-dpen)3]3+3Cl? (Λ-(S,S)-43+3Cl?) in 76?% yield. When CH2Cl2/water suspensions are treated with 1.0 equiv. of Na+ B(C6F5)4? or Na+ B(3,5-C6H3(CF3)2)4?, the mixed salts Λ-(S,S)-43+2Cl?B(aryl)4? can be isolated from the organic layers (95–91?%). A wide variety of mixed and non-mixed salts involving these and other anions (BF4?, ClO4?, I?) are also prepared. The lipophilic salts are highly enantioselective catalysts for the Michael addition of dimethylmalonate to trans-?-nitrostyrene (acetone, 0?°C; 92–85?% ee). The crystal structures of seven solvated salts are determined, and hydrogen bonding between the trications and anions or solvate molecules analyzed. There is a notable affinity of chloride anions for the C3 face of Λ-(S,S)-43+, which features three synperiplanar NH groups. Λ-(S,S)-43+2I?B(C6F5)4? is an excellent chiral solvating agent for determining enantiomeric purities of chiral organic molecules with hydrogen bond accepting functional groups (11?mol% (average), CDCl3).
Purchased from AmBeed: 13569-65-8
CAS No. : | 13569-65-8 | MDL No. : | MFCD00149840 |
Formula : | Cl3H6O3Rh | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | - |
M.W : | 263.31 | Pubchem ID : | - |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P264-P270-P301+P312+P330-P501 | UN#: | N/A |
Hazard Statements: | H302 | Packing Group: | N/A |
GHS Pictogram: |