4039-32-1

Lithium bis(trimethylsilyl)amide is used as nonnucleophilic base to generate kinetic ketone and ester enolates. It is considerably more selective than LDA and undesired reductions (e.g., of nonenolizable ketones observed in the case of LDA) can be avoided by using LHMDS.

R11:Highly Flammable.
R34:Causes burns.
R48/20:Harmful: danger of serious damage to health by prolonged exposure through inhalation .
R63:Possible risk of harm to the unborn child.
R65:Harmful: May cause lung damage if swallowed.
R67:Vapors may cause drowsiness and dizziness.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R35:Causes severe burns.
R20:Harmful by inhalation.
R62:Possible risk of impaired fertility.
R14:Reacts violently with water.

S9:Keep container in a well-ventilated place .
S16:Keep away from sources of ignition-No smoking .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S29:Do not empty into drains .
S33:Take precautionary measures against static discharges .
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 label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
S57:Use appropriate container to avoid environmental contamination .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .