ChemicalBook >?? ???? >(2S,3S)(-)-???????-1,4-?????????
(2S,3S)(-)-???????-1,4-?????????
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(2S,3S)(-)-???????-1,4-????????? ??
- ???
- 17 °C
- ?? ?
- 162 °C/19 mmHg (lit.)
- ??
- -9 º (neat)
- ??
- 1.205 g/mL at 20 °C (lit.)
- ???
- n
20/D 1.446(lit.)
- ???
- 200 °F
- ?? ??
- Store below +30°C.
- ???
- ?????(??), ?(??)? ???
- ?? ?? (pKa)
- 11.61±0.20(Predicted)
- ??? ??
- ?? ??
- ??
- ???
- Specific Gravity
- 1.21
- optical activity
- [α]23/D 8.5°, neat
- ???
- ???
- Merck
- 14,3855
- BRN
- 1727143
- CAS ??????
- 13811-71-7(CAS DataBase Reference)
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- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xi | ||
|---|---|---|---|
| ?? ???? ?? | 36/37/38 | ||
| ????? | 24/25-36-26 | ||
| WGK ?? | 3 | ||
| ?? ?? ?? | Irritant | ||
| HS ?? | 29181300 |
(2S,3S)(-)-???????-1,4-????????? C??? ??, ??, ??
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Colorless to light yellow liqui??
Diethyl D(-)-tartrate is mainly used in chiral pharmaceuticals, chiral intermediates and chiral catalysts. It can be used with titanium in enolic asymmetric epoxidization. The compound d-alpha-tocopherol is the principal compound present in natural vitamin E sources. At present, d-alpha-tocopherol and other tocopherol derivatives are used in pharmaceuticals, foods and animal feeds. It is used as a food additive.Purification Methods
Distil the esters under high vacuum and store them under vacuum or in an inert atmosphere in a desiccator in round bottomed flasks equiped with a vacuum stopcock. They have also been distilled by Kügelrohr distillation and/or by 'wiped-film' molecular distillation. They are slightly soluble in H2O but miscible with EtOH and Et2O. [Gao et al. J Am Chem Soc 109 5770 (5771) 1987, IR: Pristera Anal Chem 25 844 1953, Beilstein 3 III 1025 for D-(-), 3 IV 1232 for L(+).](2S,3S)(-)-???????-1,4-????????? ?? ?? ? ???
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(2S,3S)(-)-???????-1,4-????????? ?? ??
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(2S,3S)(-)-???????-1,4-????????? ?? ??:
(+)-?-p-????-D-??? ?????? ??? ????? (-)-D-??? ??????
(-)-Dibenzoyl-L-tartaric acid monohydrate
(+)-Dimethyl L-tartrate
Bis(diethyl-L-tartrate glycolato)diboron
Bis(diisopropyl-L-tartrate glycolato)diboron
Bis(diisopropyl-D-tartrate glycolato)diboron
(-)-DIBUTYL-D-TARTRATE
(2S,3S)(-)-Dihydroxybutane-1,4-dioic acid diethyl ester
Bis(diethyl-D-tartrate glycolato)diboron
(-)-DI-TERT-BUTYL D-TARTRATE
(-)-DIBENZYL D-TARTRATE
(2S,3S)-(+)-DIETHYL 2,3-O-BENZYLIDENETARTRATE
3-PYRIDYLMETHYL D-TARTRATE