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CAS No. : | 37942-07-7 | MDL No. : | MFCD00191998 |
Formula : | C15H22O2 | Boiling Point : | No data available |
Linear Structure Formula : | OCHC6H2OH(C(CH3)3)2 | InChI Key : | RRIQVLZDOZPJTH-UHFFFAOYSA-N |
M.W : | 234.33 | Pubchem ID : | 688023 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
70% | (R,R)-N,N'-Bis(5-3-tert-butyl-salicylidene)-l,2-cyclohexanediamine was synthesized following a similar procedure described by Jacobsen E. N., Zhang W., Muci A. R., Ecker J. R., and Deng L. Highly Enantioselective Epoxidation Catalysts Derived from 1,2- Diaminocyclohexane, J. Am. Chem. Soc, 113, 7063-7064 (1991). To a 250 mL round bottom flask was added 2.0053 g (8.5573 mmol) of 3,5 -tert butyl-2-hydroxybenzaldehyde that was dissolved in 20 mL absolute ethanol. Concurrently, (R5R)- 1,2-diammoniumcyclohexane mono-(+)-tartrate salt {see Larrow J. F., Jacobsen E. N., Gao Y., Hong Y., Nie X., and Zepp C. M., A Practical Process for the Large-Scale Preparation of (R,R)-N,N'-Bis(3,5-Di-tert- butylsalicylidene)-l,2-Cyclohexanediaminomanganese (III) Chloride, a Highly Enantioselective Epoxidation Catalyst, J. Org. Chem., 59, 1939-1940 (1994); (1.1219 g, 4.2451 mmol) was dissolved in a basic (NaOH) 0.2 M aqueous/absolute ethanol solution (1 :2). This salt solution was added dropwise to the benzaldehyde solution and the mixture was refluxed under nitrogen for 1 hour. The reaction mixture was filtered using a 60 mL medium frit and washed with 95% ethanol. The product was then extracted into methylene chloride. The frit was washed with additional methylene chloride until the solid was colorless. The solvent was removed under reduced pressure to yield 1.6843 gm (70%) of a yellow solid. 1H NMR: (CDCl3, ppm) delta = 1.24 (s, 9H); 1.41 (s, 9H); 1.45 (m, IH); 1.65 - 1.8 (m, IH); 1.8 - 2.0 (m, 2H); 3.32 (m, IH); 6.98 (d, IH); 7.30 (d, IH); 8.30 (s, IH); 13.72 (s, IH). |
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