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Bis[rhodium(α,α,α',α'-tetramethyl-1,3-benzenedipropionic Acid)]
(CAS RN:819050-89-0 제품번호:B4549)

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Bis[rhodium(alpha,alpha,alpha',alpha'-tetramethyl-1,3-benzenedipropionic Acid)]
동의어의 Rh2(esp)2

일반 정보

제품번호 B4549

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순도/분석 방법 >96.0%(HPLC)
보관 온도
M.F. / M.W. C32H40O8Rh2=758.48
CAS RN 819050-89-0
관련 CAS RN
MDL 번호 MFCD08457636
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규격

Appearance Yellow to Brown to Dark green powder to crystal
Purity(HPLC) min. 96.0 area%

참조

Reaxys-RN 21493662
PubChem SID 354333338

이용 예

Synthesis of N-H Aziridines from Unactivated Olefins Using Hydroxylamine-O-Sulfonic Acid

H0530,B4549

References

Synthesis of 1,2-Diamine Derivatives Using a Rhodium Catalyst

B4549,I0330

Experimental procedure: BocNHSO2NH2 (1, 32 mg, 0.17 mmol, 1.1 eq.), MgO (14 mg, 0.35 mmol, 2.3 eq.), Rh2(esp)2 (2 mg, 3.0 μmol, 0.02 eq.), and PhI(OAc)2 (53 mg, 0.17 mmol, 1.1 eq.) are added sequentially to a solution of alkene (0.15 mmol) in 0.5 mL of isopropyl acetate. The resulting green suspension is stirred at room temperature. NaI (25 mg, 0.17 mmol, 1.1 eq.) and 1.0 mL of DMF are added and the mixture is stirred until the reaction is complete. The reaction mixture is diluted with CH2Cl2 and filtered through a small pad of Celite. The filtrate is concentrated under reduced pressure. The material is re-dissolved in toluene and concentrated under reduced pressure. The cyclic sulfamide is purified by silica gel column chromatography.
To a solution of cyclic sulfamide (0.26 mmol) in 1.0 mL of pyridine is added 0.1 mL of H2O. The reaction mixture is stirred at 80 °C for 1 h. After cooling, the contents are transferred to a separatory funnel with 10 mL of H2O. The aqueous layer is extracted with CHCl3 (x 3). The combined organic extracts are washed with saturated aqueous NaCl (x 2), dried over MgSO4, filtered, and concentrated to give the corresponding 1,2-diamine.

References

Direct Synthesis of N-Unprotected Aziridines from Olefins Using a Rhodium Catalyst

B4549

Representative procedure: A round bottom flask is charged with alkene (0.5 mmol, 1.0 eq.) and CF3CH2OH (5 mL). To this solution at the specified temperature are added Rh2(esp)2 (3.8 mg, 5 µmol, 1 mol%) and 1 (0.119 g, 0.6 mmol, 1.2 eq.). The reaction is stirred at the specified temperature and monitored by TLC. More catalyst and 1 are added, if required. After completion, the reaction mixture is diluted with CH2Cl2(10 mL) and washed once with 15% aq. NaHCO3 solution (5 mL). The aqueous layer is extracted twice with CH2Cl2 (10 mL) and the combined organic portions are washed once with brine (5 mL), dried over Na2SO4, and concentrated in vacuo. The residue is purified on pre-packed SiO2 column.

References

PubMed Literature

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