Carbonic acid, dilithium salt

SYNS CAxMCOLIT CANDAJVHDE CARBOLITH CARBONIC ACID, DILITHIUM SALT CARBONIC ACID LITHIUM SALT CEGLUTION CP-15467-61 DILITHIUM CARBONATE ESKALITH HYPNOREX LIMAS LISKONUM LITHANE LITHICARB LITHINATE LITHIUM CARBONATE LITHOBID LITHONATE LITHOTABS NSC-16895 PLENUR PRIADEL QUILONUM RETARD... 

CARBONIC ACID, DILITHIUM SALT (554-13-2) Aqueous solution is a strong organic base. Violent reaction with acids. Incompatible with fluorine, germanium, lead diacetate, magnesium, mercurous chloride, silicon, silver nitrate, titanium. Aqueous solution incompatible with organic anhydrides, acrylates, alcohols, aldehydes, alkylene oxides, substituted allyls, cellulose nitrate, cresols, caprolactam solution, epichlorohydrin, ethylene dichloride, isocyanates, ketones, glycols, nitrates, phenols, vinyl acetate. Exothermic decomposition with maleic anhydride. Corrodes aluminum, copper, zinc in the presence of moisture. 

Carbonic acid dihydrazide. See Carbohydrazide Carbonic acid, dilithium salt. See Lithium carbonate... 

Synonyms Carbolith Carbonic acid, dilithium salt Carbonic acid, lithium salt Dilithium carbonate Lithicarb Lithium carbonate (2 1) Lithonate... 

Various substitutions of hydrogen at positions 3 and 4 in -lactams can be performed with electrophilic reagents. The 3-position is activated by the carbonyl group. Alkylation at the 3-position is readily executed via the enolate with alkyl halides, aldehydes, ketones, carbon dioxide, etc. A carboxyl group at C(4) as in 79 does not interfere, the dilithium salt being alkylated at C(3) with excellent stereocontrol, giving the /ra j-disubstituted lactams 80. Hydrolysis leads to -alkyl aspartic acids 81. 

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