2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex
CAS: 898838-07-8
Molecular Formula: C9H18Cl2LiMgN
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex - Names and Identifiers
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex - Physico-chemical Properties
| Molecular Formula | C9H18Cl2LiMgN |
| Molar Mass | 242.4 |
| Density | 0.96g/mLat 25℃ |
| Flash Point | -15°C |
| Storage Condition | 2-8°C |
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex - Risk and Safety
| Risk Codes | R63 - Possible risk of harm to the unborn child R11 - Highly Flammable R14 - Reacts violently with water R19 - May form explosive peroxides R34 - Causes burns R37 - Irritating to the respiratory system R40 - Limited evidence of a carcinogenic effect |
| Safety Description | S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3399 4.3/PG 1 |
| WGK Germany | 3 |
| HS Code | 29333990 |
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex - Reference Information
| Application | Paul crenechel and others reported that magnesium dichloride (2,2,6,6-tetramethylpiperidine) lithium salt (CAS number: 898838-07-8) application (Org.Lett., vol. 8,No.24,2006), deprotonation of aromatic hydrocarbons can be achieved by using the amino magnesium compound. Compared with the lithium base reagent, the amino magnesium compound can tolerate various active functional groups, such as ester group, nitro group and even ketone carbonyl group. Benzoylation is achieved by deprotonation of an aromatic hydrocarbon containing an ester group, followed by reaction with benzoyl chloride. |
| preparation | take 1000ml three-mouth bottle, replace the reaction bottle with argon for three times, and open a little argon after the replacement, the inside of the three-necked bottle was placed in an argon atmosphere, and then Anhydrous Lithium chloride (42.4g, 1mol), 2,2,6, 6-tetramethylpiperidine (141.3g,1mol) and 1, 10-phenanthroline (0.54g,3mmol) were then added tetrahydrofuran and the temperature was controlled to 0-5 °c, after stirring for 10 minutes, a 2.0m concentrated solution of isopropylmagnesium chloride in tetrahydrofuran (500ml, 1mol) was added dropwise. During The addition, the temperature was controlled not to exceed 10 ° C, after the dropwise addition is completed, the temperature is raised to 20~25 ℃, and stirring is continued for 8 hours. After the reaction is finished, the mixture is kept at room temperature and settled for about 2 hours, filtered with a sand funnel, and washed with tetrahydrofuran, A solution of 692ml of a lithium salt of magnesium dichloride (2,2,6, 6-tetramethylpiperidine) at a concentration of 90% M in tetrahydrofuran was obtained (yield). |
Last Update：2024-04-09 02:00:04
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View History
2,2,6,6-Tetramethylpiperidinylmagnesium chloride lithium chloride complex
(aminooxy)(trimethyl)silane
){η5-(2,7-ditert-butyL
2-(3-三甲氧基硅烷基丙基硫代)噻吩
1195945-24-4
121195-03-7
S-羧乙基异硫脲内盐
炔丙基三甲基硅烷
(aminooxy)(trimethyl)silane
){η5-(2,7-ditert-butyL
2-(3-三甲氧基硅烷基丙基硫代)噻吩
1195945-24-4
121195-03-7
S-羧乙基异硫脲内盐
炔丙基三甲基硅烷