Prhp. Rao et al., SELECTIVITY TO N-MONO OR DIALKYLATION IN THE REACTION OF ANILINE WITHDIMETHYL CARBONATE ON FAUJASITE, EMT AND BETA-ALKALINE ZEOLITES, Catalysis letters, 31(1), 1995, pp. 115-120
Zeolite K-EMT is as active and selective to N-mono methylation as K-Y
in the alkylation of aniline with dimethyl carbonate at 408 or 453 K.
No C-alkylation occurs in the temperature range studied. At 503 K, K-X
and Cs-X are about 75% selective for dialkylation to N,N-dimethylanil
ine with about 97% conversion.