Journal of the Chemical Society, Dalton Transactions p. 1893 - 1900 (1992)
Update date:2022-08-16
Topics:
Aresta, Michele
Quaranta, Eugenio
Phosphocarbamates P(O2CNR2)x(NR2)3-x (R=alkyl; x=1 or 2), easily obtainable by insertion of CO2 in the P-N bond of the corresponding aminophosphines P(NR2)3, have been used as a source of carbamate groups in the reaction with alkyl halides, R'X to afford carbamate esters.The reaction is mediated by alkali-metal halides, MY, and requires the presence of a suitable macrocyclic polyether (L).The overall reaction occurs in two steps: the carbamic group is first tranferred to the alkali-metal cation to give a carbamate salt
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